Hey, I know this is an old thread, but I just came across it and wanted to share my thoughts to update it. Checking the transmission pressures is a good idea, but I get that finding the test port locations can be a pain. Maybe giving the transmission valve area a good pressure wash this weekend could help you find those pressure test connections. By the way, it's interesting that you didn't see any oil flow in the transmission cooler hoses. I'm not sure if that's normal or not, but maybe someone with more experience in this type of machine can jump in and give you some insight. Good luck with your troubleshooting, and feel free to ask more questions. Oh, and if you're interested, there are some [url="https://anguslifttrucks.co.uk/forklift-training-uk/"]Lift Truck courses[/url] you can take to gain more knowledge in this area.