So I'll explain this the best way I can. First off I have a pro 5.0 shifter, ram hd clutch with firewall adjustment. Last night I was cruising around 40mph in 5th gear, downshifted shifted to 4th and grinding. So this morning I just tool it back out. Got up to 60mph in 5th, downshifted to 4th and went smooth. Cruised at 40 again in 5th and went to 4th and grinding WTF. I adjusted the bump stops because I was having issues with reverse gear popping out. That seems to be fine but now a little bit of grinding going into reverse. All gears are there and work great, just a low cruise speed in 5th gear downshifting to 4th it grinds. Need some help!