Hello everyone. I need some help trying to resolve my transmission problem. I recently purchased a 1999 TJ with a 4.0 engine and a 5 speed manual transmission. My problem is when I first start up and get going the transmission shift as it should with no issues. Once the engine and trans get warmer (up to normal operating temp) I can not shift into any gear other than reverse and only reverse with a grinding noise. I just replaced the master and slave cylinder and still have the same problem. The only way I can get it into gear is To shut off the engine. Once the engine is off I can shift in and out of any gear with no problem. Does anybody have any idea what’s causing this issue.