the out from the loader valve tees into the in for the travel valve.
kinda spells trouble to me with open center system-you can have possible pressure doubling when you open a pressure loaded hydraulic circuit into another in series..each valve should have a separate return/out path back to the tank..Sounds like a flow divider might be missing ahead of the valves and was replumbed in series just to make it work,on top of using the wrong valve too..you never know with used equipment. I would check into how it's SUPPOSED to be plumbed..maybe modifications were made early on,or someone didnt build this to print properly to begin with. The Tee at the return side of the valve is causing a huge bottleneck with flow and may be the culprit. if you have to add returns,add them right at the tank..My loader isnt a cadtrac but I have all (3) 3/4"valve returns ported thru two tank ports at my hydraulic tank,works fine,minimal flow resistance right at the tank
