Hi, I recently changed strings on my fender jazz to DR neon strings. I believe the old strings were Ernie ball round wound. After I put the neons on, I noticed the A string volume was considerably lower than the other strings. I thought the problem was a dead string, so I replaced the A string. The volume is still low. I tried adjusting string height but it doesn't help. I never noticed the old strings having this problem (I haven't had the bass long so I guess it's possible but unlikely). The bass is tuned one half step down. Does anyone have any ideas? Is this a known problem with DR strings?