My jeep has been popping out of first gear for quite some time, my brother the mechanic claims it to be shift fork/s? Then while driving home from a plastic surgery appointment i developed a horrible groan and grinding. within minutes i was pulled over waiting for a ride as i could no longer drive it. it sounded like the gears went/ piled up. My brother states synchronizers? any one have this issue? or can shed a second opinoin on this? it clutches fine.