[Tigers] Different Holley Gasket Question

[Terry Packer]

A few times over the years my Holly's main jets have gotten obstructed. I'm running multiple fuel filters including a final clear one which is perfectly clean. 

Since contamination doesn't seem to be getting in with the fuel, I suspect shards of gasket in the jets. It could be from the bowl gasket. But it seems more likely that fibers from the seals in the bowl's 4 mounting holes get carried inside on the threads of the mounting bolts when they're inserted to tighten the bowl to the body. 

So my questions are - can anybody confirm whether those fiber seals in the float bowl holes are a source of contamination and are there any alternative seals that won't shed flakes when the bolts are taken in and out?

Other thoughts/suggestions gratefully accepted.

Thanks
Terry 
9470018