Bought an older (single door, no glass, two hole collar, raised griddle) VC Resolute thru EBay and later found that flue collar could not be reversed to up positon because of repair by previous owner. Have tried to find replacement collar with no luck. Many sources say just not available anywhere. Seller says he has friend who is accomplished welder and can repair collar. That would be fine, but most everyone I know says that cast iron is all but impossible to weld sucessfully. Any suggestions? Thanks. Joe.