i just had my clutch replaced. i had a 2600 with Xact flywheel but i had it replaced with the stock clutch and flywheel cause it went out on me. well after i got it replaced it drove fine until about a week after and it was hard to go into gear and sometimes wouldn't at all. then when i first start up it won't go into gear but if i start it up in 1st gear it will make some wierd sounds and shake and shift fine till i turn it off again. i'm having it looked at again but what could this be?

1997 Mitsubishi Eclipse GSX: K&N Filter, John Sheppard built transmission with GVR4 1st gear, autometer boost gauge, "free mods", Greddy type-s BOV, broken shifter