Well they have not fallen off, my first welding attempt was with a Clarke 106 mig, i fiddled with the settings for a while and found 2 on minimum was ok , wire speed was a 6, i only had the fluxcore option as i still have not ordered any gas and regulator it seemed fine at tacking and i went back and filled the gaps, pics tomorrow once i have tided it up. regards the inner frame bracket one threaded hole is oversize the fits lovely.