As anyone who has an older polaris knows the oil sending unit gets loose and flops out of top of tank,when riding in waves.OK heres my fix,I drained out oil, pulled up sending unit enough to clean the rubber good,all oil off.Then put a set of vise grips (needle nose on each side of rubber plug to compress it) sprayed a little carb cleaner to soften rubber. left it overnight, in morning poped off vise grips, the plug now fit real snug in tank, but to be sure I dremeled a small hole in plastic neck,and inserted a stainless coarse thread drywall type screw 1/2" long ,screwed it into rubber plug.Presto now no worries about it popping off, no pulling tank and trying to silicone it in place. just a hint Thanks>Marvin