Update.... Got the oil of wintergreen a couple of days ago but haven't gone down to clean the Kroil off the arbor. If the wintergreen oil won't loosen the cylinder up I will probably pull it and the arbor out of the gun, so it can sit in a bath of the oil for as long as it takes. At the most, it will cost a trigger/bolt spring and a new arbor to get the gun running. I have extra cylinders, even a conversion cylinder or 2 for it.
