Gear changes

[Nathaxthelarge]

Hey there,
Ive not long got a MY04 liberty. Its been going great however sometimes when i go to change gear i cant get the car out of or into gear. It seems to sometimes be getting out of first to nuetral, or going from 4th to 3rd. It doesnt happen all the time, only now and again, i was wondering if anyone else has had this problemo or if anyone knows what it is? Ive also read a fair bit about the duel mass flywheel issues, its a squealing chirping sort of noise only when taking off, the rest of the time its find, so i dont know if thats affecting it or not.