I upgraded the drum and sprag a few years ago in the thought of safety. I spent thousands on the engine. For a lot less then that I can add some insurance to the tranny. One thought I've always had is I watch guys stage their car and don't bother taking the slack out of the transmission. I wonder if this can't play into it? I've seen some back into the second amber because the over ran it and just slap it in low gear. I don't know, but it always makes me cringe.