Should you sand the
Should you sand the bucket holes, just be really careful to get all the sand residual out. Sand is really a bad thing -
There is guy we know at a small airport north of San Francisco – sandblasted the inside of his engine, cleaned it thoroughly he thought, painted the inside – As you can imagine, the sand gets everywhere.
Took it out, flew it once around the pattern, then oil pressure started to drop, fortunately got it back on the ground in one piece. Engine was ruined. (My Dads story – he does antique airplanes.)