Crafty if you can't find the Kroil get a can of PB blaster...
Hmmm...got a can, in fact just used it yesterday on a sticky doorknob, that stuff's incredible
I'll give it a try - thanks
"There is no royal road to this heavy surf-fishing. With all the appliances for comfort experience can suggest, there is a certain amount of hard work to be done and exposure to be bourne as a part of the price of success." From "Striped Bass," Scribner's Magazine, 1881.
If they're broken off or really rusted in, the entire insert will sometimes spin free and make that stud useless. I've been using blue grease on the threads of my wading boots and korkers with great success, makes changing spikes much easier.