i got the new trans in, ran a 15.2 on the motor and then over revved the motor a couple days later.got a new motor with 45k on it, and it was in and running great. took it to the track got some great times, i was spinning to much and wanted to break into 13s. i did a decent burnout got to the line. went to launch and blew the diff pin out. so its just proof that even with the pin welded, it can still fly out.