Trying to fit one on my newer manufactured HW77k, am having issues. Removing the front sight block seems to require more than lots of heat with a wooden block.. Going to use a 30ton press in a little bit so that should be taken care of. The issue is my underlever has a spring loaded wide nosed plunger. I am not seeing how the lever is retained with the Vmach front end fitted? The Vmach has a threaded hole where a spring loaded ball bearing plunger goes in, remove it and it's a large threaded hole. It does have a steel piece included with a countersink hole but have no idea where it goes?