It did not get past the filter.Never heard of metal getting past the fuel filter into the Carb. Had to been in a line or some fitting when putting the Carb. on or replacing some part of the fuel line to it. It is possible to wash a motor down by over fueling. No oil hence excessive wear on cylinder wall and the piston as well as ring's. If you pull the dip stick shortly after doing an oil change and smell's like gas think you have a problem. This is usually to much carb for the motor. Hope you get it worked out. Russ.
Yes I am using a windage try, Some how a sliver of metal got into the 750 holley and it stared flood the engine with to much fuel This all happen on the second summer of driving and about 2500 miles. plus there may have been and issue with one two pistons not sure witch ones the engine is back at the builders and replacing piston for free, no damage to cyl. walls plus a cut rate for the Labor.did you have a windage tray in the engine. I don,t not use wind trays, I think they cause piston wear, I like all the oil to fly around in the engine, Also number 1 piston and cylinder will have more wear, the torq start at number 1. I may be wrong too. just my thinking, no I not drinking