I have recently acquired a silver cornet that has had some work done to it. The soldering was especially poor around where the bell and lead pipe braces connect to the valve block. It looks to me like either excess lead solder or melted siler finish in little globs, though I expect it is solder because it is oxidizing. Is it feasible to remove the globs? The job isn't exremely horible maybe a 1/4 to 1/2 inch around the joint, but I certainly notice it. Also there are tiny places where the silver has been worn through, is there any way to touch those up? In general the finish is amazing for a 40 year old horn so I'm not complaining, but it might be worth doing the little cosmetic touch ups.