I've got a fresh 4l60e that refuses to stay in manual 1st. I've got an FTL 3200 stall and getting on the stall it will shift 2nd and come out in 2nd. If I keep the stall low it'll roll out in 1st and then shift 2nd and bog. Is there any adjustments I can do to make this thing stay in 1st? I've tried searching and found a few threads but none had a posted fix. The cars a 99 trans am.