I've got an 03 Myco with 2 5200 lb axles, the forward axle with kodiak discs, surge activated, GM calipers.

a while back i had problems with sticking brakes, did some homework, ditched the solenoid which was in series and made a mechanical lockout when needed for backing, hardly ever use it cause usually when I'm backing, it's down a ramp.

Well, just did a 7 mile run to top off at the pumps ($40-50 towards other fluids) and the brakes were sticking still. I'll tear into it soon, must be either stuck caliper or mt pins, no??

Update- in case it helps someone else...

I spoke with kodiak, seeing as both brakes are sticking, it's more likely something is wrong with tyhe master cylinder not releasing pressure. I can feel the tongue telescoping so I don't think it's jammed, will dig further soon. Luckily I don't need the trailer for a few weeks (on a covered lift)

Cat, at one time several year ago my master cylinder went dry NOt sure how, but it did.
Well I never gave it any more thought once I had them checked and bleed. They came up with no leaks.
Well the folowing month I had the same thing happen as you.
What I found was that inside the master it had started to rust.
The bleed hole on the piston was closed. You could see the area and I used a small nail to clean the hole.
Once I cleaned the build up out you could see the fluid transfer fine.
May want to look at that.