I used red threadlocker to attach the muffler to my ZDZ80 twin. I needed to replace the gasket, so I removed the bolts and took off the muffler, the engine was cool when I did this. When I wanted to put it back on, the bolts won't go in but 1/3 of the way because of (I assume) left over threadlocker inside the engine socket. Any suggestions? Re-tap, heat, chemical removal, pray?