I haven't taken a closer look at it yet. Is the shift rod on the transmission splined? Keyed? Is there a retainer grove in the rod to lock the bolt in? Is the OEM nut a nyloc type?
I suppose this is the handi work of the shop that rebuilt the transmission (before I bought it). Shortly after I bought it I got stranded (due to a loose ground strap). It had only one starter mounting bolt, 2 engine to transmission bolts, one was bent and the other one was loose!