Hello, I was given a 1954 m&p 4" with lots of holster wear,but mechanichly tight.This revolver has been in the family since new.I would like to convert it to a 3" heavy non tapered ribbed barrel.I allready have the barrel. My question is would you guys do the conversion or try to trade for a factory 3" 5 screw,if there is such a revolver? Thanks