a_regular_buckaroo

hey guys newbie here I just bought my first chevy got tired of working on dodge after dodge lol I got a 93 6.5L turbo diesel 4x4 3/4 ton 5 speed manual transmission and after it warms up i cant hardly get it into gear or out for that matter gotta slamm it into gear and rip it out!!! and pretty sure the clutch needs to be adjusted even pushed in if you take your foot off the brakes it trys to take off but if I push the clutch too hard it breaks my master clutch cylinder. but she works fine when shes cold whats going on????