I've managed thé engine (4strokes thunder tiger f91s) and one os46 sfh ringed ) rebuild and seals and gadjets changes, the fuel tank and dust collector, CDI adaptations are Turned and set for both, i have Brutus full system ( and a few others) o place one my plane and parallel i built a xiao version to have a tryout. This last version doesn't work fully for instance, i suspect the MOSFET to bé Fake because it claims to be vishay which dip4 IS in different casing
I've ordres so from different source i will test AT reception, meanwhile i will re maje breakin' of the old glow engines