My 86 full size Bronco is grinding in reverse and park slips. This only occurs in 2wd, 4hi. 4low is fine. I believe that the problem is my t-case. My truck has been sitting for awhile due to the driver side front wheel spacer breaking which cause me to dig the front end in the ground. Impact was hard enough to bend stock radius arm and curled radius arm drop bracket into drive shaft and make my tranny drain all th fuild. Since then I’ve replace transmission pan gasket(fixed the leak), replaced the drop brackets with superlift super runner arms. And the superlift steering kit( cause why not). I just started driving my truck again maybe 100miles and no park and bad grinding nosies in 2wd also has a burning smell but my fuild is perfect as I just replaced it. Any thoughts or suggestions would be appreciated!