Thanks for that info, I have that Hacker motor and wanted to fit it today ready for a test run tomorrow. I realized that it requires slightly larger diameter screws than the 430l my JGF. This necessitates making the slots in the motor mount a wee bit wider as the wider screws do not go throgh the motor mounts. Did you have the same problem? ( I have re-fitted my JGF for tomorrow, not keen to mess with the motor mount plate right now). I may even just order a second motor mount for teh Hacker motor and widen th eslots specifically for that motor then?
I'm very keen to compare the Hacker to my JFG450F.