I wrote to you before you said the transmission fluid is pink. If it's pink then you have a mixure of radiator fluid (water) and transmission fluid. You said that the truck won't go up a ramp then you need to do a stall check. This will tell you if the torque converter is functioning correctly. If the stall test is good then you need to bleed the inchig line that goes to the top of the valve assy. If that does't work call me. Look at my profile and get my number.

Ive changed it multiple times and it is still pink looking.

I know most Cat dealers (and I would expect a bunch other places too) can get you an oil sample lab report for a very reasonable fee, and pretty quick too.
I would most likely just change the trans fluid up front, that would all be part of a "proper repair".
Trans fluid ain't THAT expensive yet, is it? It ought to get changed every couple of years, even if you only run it 30 hours that couple of years.

Okay, this thing still is going and I'm just now getting back to working on it. I took the inching valve out and it doesnt look so good. I cant remember if we were loosing brake fluid in it or not. How do you go about testing the pressures on the transmission? Is there a way to test the oil in the transmission to see if brake fluid has contaminated it?

Yup- probably an inching problem.

If the transmission is not pulling you up a ramp or over small bumps, but drives on flat land ok, you need to do a stall test on the torque converter. You also should take pressures of the transmission. It could also be that your inching valve slave cylinder needs replacing.

these trucks have 2 master cylinders, and the left one is an inching circuit that when the slave cylinder leaks, it is possible that the leaked brake fluid finds it's way into the transmission fluid. At first, this will cause no noticeable problem, and in fact, may help the transmission engage because the effect the brake fluid has is to soften the material the clutch plates are made from. If the leak not repaired and fluid is not flushed right away, it eventually will also soften the seals of the transmission, and over soften the clutch plates, so the trans wears out and slips.
Before I went over the edge with it, I would make sure that the left master cylinder has "freeplay" in the shaft that pushes the spool into the master cylinder, when the pedal is released. I would also see if "bleeding" the pressure from the inching slave cylinder (on the left side of the transmission, not easy to get to) gave you a good inching/clutch engagement.