I drive a 1999 Jeep Wrangler 4 cylinder with manual transmission. My problem is when I try and shift out of 3rd gear it is almost like the stick is locked in place and wont move. With a little force I can get it out of 3rd. It is only 3rd gear that is having this problem. I had it in the shop in October and the mechanic said my clutch looked good so I need to know if it is the transmission, and what the problem is.