Just finished an 11 hour session!! Pushrod tubes sorted..heads and pistons de-coked..have turned my attention back to the driveshaft gator, but I can't seem to loosen the locknuts. They are not having it. I've asked them nicely with gentle hammer strokes on the box spanner, and with heat, but no joy! I'm thinking that I will have to do the 27mm socket ground down, with an extension bar to help loosen them. Is this usual? Any tips welcomed as usual.