Don,I'm completely unclear as to what was unprofessional in my vertex piston side pin top pin comments.
You were asked if you top pin your pistons,you said no.I would wonder why not if you believed it was necessary,so my guess is you don't believe it's necessary,In YOUR MARKET.
I believe we have similar markets,and I'm in agreement with you,I think,I'll certainly not put words in your mouth.
In the piston question post that preceded and initiated this one Jay stated"I build race division motors for completion only",(possibly not word for word),and in his market I'm convinced by his experience( that I do respect),that top pinning is an important factor.
As to my status as an engine builder,I'm not a world class racing engine builder, but I've been at it for close to 40 years as my own boss,and I feel somewhat capable...as in I didn't just fall off the proverbial "Turnip Truck",and find a wrench in the dust.
What is the purpose of these motor forums,to share ideas and educate,or back a few chosen folks opinions?Ever heard of free speech?
Of course these are my only my opinions,and I certainly will change them when and if facts become available to support the change.
Respectfully,Chris