I just thought of some thing. I don't have a Cadtrac but on my Mini Hoe the loader has a power beyond valve with float feature and the backhoe runs off that. just recently I have experienced a couple times where the backhoe would barely move and I could hear the relief on the pump lifting. I think the spool on loader valve sticks just enough that nothing moves BUT the flow through the valve is restricted. I've also noticed that the float feature quit working too. if I wiggle the valve handle the flow is restored.
Think I'm going to get a new valve. that one was surplus and I had to fabricate handles and every thing for it.
JUST thought I would throw that out there. might be a spool sticking some where after it gets all warmed up.

I know a lot about a lot of things BUT I still have a lot to learn.
Life is what you make of it. So, why not make a working machine to make it easier.