Dislodging Edson pedestal bolts
I've been prepping my new-to-me Islander 30 and need to run a cable or two up the steering pedestal for the GPS unit. I removed the compass and have been completely stymied by the bolts holding the compass base to the pedestal bowl. Teasingly, one bolt came out fairly easily. It's about four inches long with the bottom two inches threaded and has a flat head. The other three are pretty much welded in! I've tried dousing the entire visible lengths in ProBlast and have even used an impact screwdriver to no avail. Any secret tips on breaking through?