when i have the clutch to the floor at a dead stop and i put it in first or second i start to hear a what sounds like metal chunks clanking around in the casing of the trans. and the car jumps forward slightly about a half inch at a time. first gear is the worst second is getting there havent tried third fourth or fifth. all air is out of lines i have checked for leaks many times any other suggestions are apprediated. also i have to force it to go into second ion high rpms but no grind . when i go from second to third in high rpms it grinds though. any suggestions