T/C Hawken rifles appear to have gone through a number of changes over the years, barrel wedge and lock bolt escutcheons surface mounted rather than inlet, clean out screws discontinued, sight changes, hammer configuration changes, stock shape and perhaps some others. Are there "better than other" versions of these guns? Do early guns bring a premium? I think I've heard early guns used outsource barrels, Sharon perhaps? Any info you folks might have would be appreciated.