Why is it so hard to get good advice !!???

In terms of quench - the smaller the disance the greater the benefit - it's the parts getting very close that squishes the mixture to the plug. That's what "quench" is. Keeping the intake charge mixed and inducing what they call "tumble" and "swirl". that process cools the outer regions of the chamber lessening the tendency for the liquid fuel that falls out of suspension and ends up out in the dead spots to self-ignite. The further apart the parts are, the less squish. The less squish, the less affect. You get a lot of benefit when the distance is less than .035. I tend to run between .025-.035 depending on the rod, the bore, and the commpression height of the piston. You get less affect from .035 there to .045. You get almost nothing over .050. The best example is to take your hands and bring them together in a prayer looking pose - a clap with your hands near enough to your face to feel the air movement. Clap once. Then stop your hands when they are an inch apart. then 2 inches. What does that do to the air movement you feel on your face?

You are asking a lot of builders, a few manufacturer, and hobbyists for opinons on a fix. If you cast a big enough net you'll catch one of everything and there are many ways to skin this cat... none are right or wrong. they will all help with your problem if done properly. You can slow and limit the timing curve. You can replace the ehad gaskets to lower the static and dynamic ratios. Or you can change the camshaft to lower the dynamic. In my opinion the best way is the camshaft approach. the cheapest would be head gaskets and change the timing - but to me you're giving up on power by keeping the small cam and hobbling the engine to run with it.