Yeah line bleed thats not the problem, what I have done is an oil change for the gear box. And thats where I have found a noticeable change. Now its not as hard to change unless well warmed up (still not as bad but not smooth). When first start up works like a charm like it should but warmed up then it gets a little hard to slip into gear. Talked to my mechanic he recons a couple of changes could fix it or could be the synchro's (what ever they are cant cant a proper info on it) that could be the problem.

2002 Kia Sportage