Trailer help again

First, my 78 Nautique never had brakes and I towed it all over the place, I recall two times when a panic stop was needed and that trailer almost pushed me into other cars.
Brakes are good to have.

Next: My 1995 Nautique was in my garage today, I jacked up the trailer and installed a 2" ball on a receiver into the surge break and locked it in place. Where the pin goes through the receiver I put a 15" rod, on the rod on each side of the hitch I add a couple of 10 pound weights from my weight bench.   The weight applies the brakes and allows me to test.
With the axle sitting on jack stands I first check to see if the shoes are adjusted correct.
Next I add the weights to the receiver which applies the brakes.
My pass side applied well but the drivers side tire still spun a little.
Now, I think, probably air in the line.
I bled the brakes, while bleeding I discover the master cylinder does not apply any pressure till the last 1/2" of movement. The hitch moves about 2" total in application but zero brake fluid moved until that last 1/2".   This is an Atwood Brake and welded on.

I searched today to find parts to replace the shock and the master cylinder or parts to rebuild the master cylinder.   Parts can be found but are very expensive. Master Cylinder $130!!! Gasket $27, Rubber boot, $15. So parts are pretty much unobtainable.

Now, I am hoping for advice choosing my new trailer Brake Actuator for drum brakes.

I see the ones from Titan advertised and Demco. They appear to be fine but I am hoping for help with the choice. My actuator will mount to a 3" square tube that comes off the front of my DHM trailer. The old Atwood is welded on, I can weld the new one but I prefer to bolt it on for future replacement. Sitting on the square 3" tube I am afraid the slot to bleed the system will be blocked off by the square channel mounting.

Any advice is appreciated I hope to order parts very soon.
Thanks

Grease seals are easy to find, measure your shaft size, Inside diameter of the Hub and the thickness or width of your old seals.
With these measurements you can look up a seal part number.   National Seals has a good chart I have used many times to match seals to sizes.

I hope we both find answers to get back on the water soon!

Mark

checked on the Prostar weight, its about 2400lbs, not including the trailer. The Ski Nautique 176 is right at 2200 give or take. The Prestige Trailer is the variable in this equation.   

The Atwood on my trailer is a bolt on setup, when i had the hubs off the pads and drums look like they have never worked. I am almost positive that the bearings were original because the grease seal had a white paint marker line that went across it and onto the Hub( almost like a anti tamper mark and or visual inspection mark at the time of manufacturing).

I have no doubt the truck can pull and stop the trailer/boat combo. it pulled and stopped fine with no pushing when braking all the way back from the previous owner location (160miles).

I have friends who all have legit ski boats-1986 2001, 1998 Moomba Outback, and a Stars and Stripes MC. out of those 3 boats only the 2001 has brakes(new dbl axle trailer).

The fold-away tongue is a must, i need to install it to keep the girlfriend off my back about the boats current parking. The brake line is solid all the way to the actuator, and will require some very cautious cutting as it is, replacing the the setup with a non surge brake coupler would speed up the process and allow for more funds to be put into the boat and accessories.
just wanted some opinions about loosing the brake setup
-Thanks

63skier- Logical thinking, that is exactly what I needed. i played both scenarios out in my head but for some reason i was doubting my own thought process on the matter

I don’t recall anyone having major issues sourcing bearings and seals for a prestige Nautique trailer.

You will need to modify the hard steel brake line to a flexible section with even possibly a disconnect at the hinge.

Hollywood wrote: I don’t recall anyone having major issues sourcing bearings and seals for a prestige Nautique trailer. .

How to identify trailer bearings and seals.