I'm still not sure why, but .035" P-H appears to be the closest that any auto engine can stand (really tiny engines with 50mm bore, etc. go down to .025").
Even if the engine runs well, the light contact under high load and temperature crushes the top ring land down a few thousandths, capturing the compression ring so that it can't expand under combustion pressure. Fix: surgical lathe work on the ring land, or new pistons.
Using too wide P-H may not increase knock immediately as you go bigger (depending on chamber shape, etc.), but the quench is reduced, very little after .060" and gone by .090".
HTH