never done it to sys 9 but it works fine in sys 3-7 and 11. Considering the circuit didnt change, sys 9 should be fine.

There have been reports of exploding mosfets and predrivers because the Vgs rating is close to maximum. I use legit FQP17P06 and never had trouble. Do know there are counterfeit mosfets out there and I suspect that might be at least part of the cause of reported failures.

The voltage dividing setup is best, but I have gotten away with using a 1K 1W(just so it fits better) instead of the 27ohm 5w. I would not recommend using zero ohm resistor. A resistor like 1K can still turn on the gate, but allow current limiting if the mosfet shorts.

burning up resistors is usually a symptom of a stuck on lamp circuit. They are constantly strobed, but when they lock on for whatever reason be it a blown 7408 blanking chip or the main transistor itself, those resistors can burn up. So if just one or two resistors get hot enough to burn a 5w resistor then something else is probably wrong.