My distributor shaft has maybe 0.008-0.010 of vertical movement inside the distributor housing. Most folks I've talked to about this say it's not a problem, and nothing to worry about. My buddy helpin me with the engine swears up and down that it is, but he is more of a naturally aspirated big block type of guy. So I want to know from the folks who know these vehicles. Do I need to shim the distributor gear or not? Thanks in advance!