The wtf where is my truck moment

[Slowy-gonzalez]

So, I recently got this 57 big window rat rod kinf of truck, it wasnt running too good due to a timing issue, today I set the timing and it runs very good now, how ever I noticed it likes to jump out of park and into reverse on its own, so I put it in park go inside for 5 mins when I come out the door and!!!!!!!!!!