"Measure it with a micrometer- - - -mark it with chalk- - - -cut it off with an ax!" Dash mounted ammeters are notoriously inaccurate, and they're so over-built it would take a dead short to ground to damage one or heat it up enough to burn wiring. This discussion, like a LOT of others on similar subjects has gotten ridiculously silly.
Beltfed, you've summarized my thoughts exactly. I'll get fussy about a thousandth of an inch of extra clearance on a rod or main bearing, or a couple of ten-thousandths on a wrist pin bushing. That stuff is important. Getting anal about an ammeter reading is stupid!
Jerry
