Hit the cover with a propane torch before trying the EZ out. The torch will break loose the loctite. Try not to get the bolt hot you want the cover to expand and make the hole larger not the bolt to expand and get tighter.The screws are loctited in, drilling the heads, will only create further problems... like taking the outer primary off, and using a drill press to drill a straight hole.. ez outs dont do well.with loctite..
focus the heat on the cover not the screw. Purpose is to:, after hearing the screw to appx 400°F with a propane torch... or,,,,