one thing about my 52 with the mallory..... it would always start back up, idle just fine.............seems like it acted up only when it was moving....
never did run rough, it would not run at all, sometimes it would stop when going from first to second...........crazy deal but it was so nice when it got fixed........like I said, mine was bad at first,, acted just like someone turn the key off..........oh well, I am sure you will find the problem... maybe the wheels are part of the problem...lol
