I have a 2007 waverunner xx 1100 that I have not ridden for several years due to a prolonged 4 year recovery from an accident. The coil packs have rusted and are completely frozen in the head. I was looking at a new coil and it has a steel sleeve around it and I assume it has just rusted and frozen in the aluminum hole. I completely destroyed one coil trying to twist it with large vice grips. The problem is so severe that I don't see any way but to try to drill out the center of the coils to get them out. Has anybody ever had to deal with this problem? I am thinking of trying a hole saw that would go inside the steel collar to remove the insides and then try to cut the steel collar down one side with a die grinder. I would then try to seperate the rusted steel from the aluminum hole with a small chisel. Any thoughts or ideas?