How tight should the fit be between the link pin and the link/barrell lug? My old 1911 U.S.P., I know, wasn't made to close tolerances, being a military pistol, but is very loose in the fit between those points. You can turn the slide on its side and the pin will fall out. The pistol fires perfectly, no FTF or FTE so if it's not broke . . . .. Can this "looseness" lead to problems down the line? And if so will a new pin have to be fitted? I don't shoot this pistol all that much, about 500 rounds a year is my average.