ok, removing the 393 does NOT remove over current control, it gives it BACK to the eg8010 chip... the 393 was causing problems with blowing mosfets in oztules inverter ( and others including mine ). it was as oz explained fighting the eg8010 current control ( which works perfectly fine) as it would " trip " in a instant and re-enable too fast, which with a tight toroidal transformer means certain death for primary mosfets as it introduces a non-constant waveform.. why he ended up building his own board to start with.
the eg8010's current control is VERY good, shuts down smoothly and never caused issues, again with oztules and others ( including mine), as it takes its sample from the negative DC side there should be no " earthing " issues like the VFB side ( as that is sampled from the AC side) .. oztules thread on these boards is a treasure trove of information that is worth the read if you are interested, he explains things so much better..