i ull the clutch push down to first and it grabs and stalls you almost have to launch it at a high idle or it stalls i dont want to screw with it 800 times do i need to back out the middle screw or screw it in and can i try the clutch before i put it back togather like if i pul clutch in and spin the wheels then put it in to 1st and see if it still grabs