Hello, this may sound silly, but I am having trouble tuning some flat wound strings on my highway one P bass. I got the bass and wanted to try flat wound strings. the first set was a set of D'Addario ECB82 XL Chromes Flatwound Long Scale Bass Strings. as I was tuning them the E string popped. not much I could do at that point so I put the old E string back. I liked the feel of the flat wounds but the Round wound E was very different in sound (stainless vs chrome). So I ordered some Fender 9050M STAINLESS STEEL FLAT WOUND LONG SCALE BASS STRINGS MEDIUM. The Problem I have installed them got the E and A strings tuned and seem Ok, but when I try to tighten the D and G strings the seem to be tight but not in tune yet (off by a few notes, e.g. G is Db). As I continue to tighten them they (or the neck) starts making pinging and cracking noises. I still have a ways to go to get to a G. I don't think I am over-tightening them. when tuned loosely they sound much different then the E and A string on the highway one, and the D and G strings on another bass I have. Any suggestions, I would hate to ruin another set or worse damage the bass neck. Should I stop at the first time the strings are in tune once the slack is removed? it does not sound right. HELP!