So awhile back I hadnt torqued the nut down enough as it basically could be undone by hand. It got knocked loose somehow i suppose.. But anyways, I made sure it wouldnt happen again by torquing the nut down nice and tight and also used some red threadlocker. Well now i need to take the damn thing apart again to get to a seal and it is not budging with the sprocket jammed with a socket + engine in a vice. Any tips? Torch it maybe? I've started to try and machine a homemade device based on the puch tool for the job but who knows if that would be any better.