86 v8 nwc t5. .My 1st gear pops out when releasing clutch from a dead stop , after it pops out i can slide it right into 2nd. But sometimes it will stay in 1st from a rolling stop then i have to rev, and play around to get it into 2nd takes quite a few tries. All the other gears work GREAT just tryin to get some ideas from you guys any help would be appreciated!