During installation of a new front sight blade, I cracked a solder joint holding the front sight band together. After cleaning away the old solder, I see about a 1/4" split on the side of the band. The band was soldered together when installed on the barrel. I am ready to have the front sight band resoldered to the barrel, but thought I better stop and ask some questions. Was this old solder joint the correct installation of the band? Was it a repair at some later time? Any tips on resoldering that will keep from damaging the barrel? The Krag appears to be an 1896 Saddle Ring Carbine.