My 1990 YJ Larado package did the same thing. it would be fine shifting while rolling but if you try to stick it in first gear at a stop you'd need both hands to get it in there. Everyone I talked to about it said it is normal, it's just hard to get it in gear. My trick was to shift into neutral and let the clutch out hit the gas and then clutch in and it would pop right into gear. I guess the technical side of it is the syncronizers wouldn't mesh together and by 'double clutching' it would spin them enough to go together.
I would hate to think that you would get rid of it for that, hope this helps you.
2006 SE 6 Speed, Solar Yellow. Zone 2" Hydro BB, Sway Links, and Steering Stabilizer. 31x10.5-15 Bridgestone Dueler AT Revo. Alpine CDA9813, Polk MM6, Polk C400.4