I was adjusting the timing on my newly purchased 72 TR6 and it just quit. I thought that maybe the points were the problem & my neighbor who is a mechanic came over to assist. He said that the upper distributor shaft should sit into distributor drive off-set slot better than it currently is. He re-seated it, properly set the timing and secured the bolt. He's concerned that it should sit deeper in the assembly and may pop out while driving. Thoughts???