Heavy Rain Primary Drain

Tin primaries tend to fill up with water in heavy rain.  I find the lowest point underneath, and mark it.  Then remove the outer primary cover, and use a ball-peen hammer to pound a small "water reservoir" and drill a drain hole.  Any water, condensation, etc. that happens to squeeze in . . . just runs right back out !
Slippery hand shifter and foot clutch to keeps you alert . . .