Ahh... red dust, seen it when cleaning the petcock while I was patching rust holes in bottom of tank. Yep, fuel filter is on there, no issues so far.
Bike is staying bone stock, its just fine for me the way it is with the leaking head gasket, false neutral shifts, etc.
Only thing I want to change is the seat, after 30 min or so it hurts, maybe a sheepskin pad or similar may help.