Use an air blow gun with a needle-sharp nozzle to blow the blast residue out of the plug. I have used bead-blasted plugs on race engines that cost upwards of $10K with no problems, so the old mechanics' tales about cleaned plugs causing problems are about as believable as stories of the Easter bunny, Santa Claus, and honest politicians. I used a piece of 1/4" aluminum plate with 8 14MM holes threaded into it as a holder for blasting, and also for storage in the race day tool box.
A high float level causes a rich mixture- - - -not a low one.
Jerry
