I let me son borrow my Uberti Walker and he brought it back clean and shining. So I put it away for a while and when I went to use it the next time I found the cylinder would not rotate. I asked if he had cleaned the base pin and bore and got, "Oops" as an answer. It appears as if the cylinder and base pin are now one! I removed the barrel and propped the gun up in its loading fixture which keeps the cylinder facing the vertical and have been applying penetrating oil to the base pin. After three weeks, no luck. I have also tried forcing the cylinder forward using two small brass wedges between the frame and cylinder, still no luck. I was going to drop it off with a gunsmith, but all of the local guys are at least a month out. Any suggestions????