I just bought an 05 wrangler x, its a manual. everything seems to be working fine i can shift from 1st gear to 6th without any problems. but when i shift to reverse the first couple times it will always grind when i accelerate. i have to be really rough with the shifting and switch from neutral to reverse at least 5 times before my jeep will back up. im really hoping its not a major transmission issue can i get any pointers on what this problem could be?