Originally Posted by bigalbass
+ 1 on making sure that the bend is sharp over the bridge. I would recommend turning down the tone pump to where you had it with the old string set and (them tone pumps are strong) and setting volume through your amp. I think that the B string may be "farting out" under all the pre amp power.
This would make sense, except the acoustic sustain is killed, too.
The pickups are about 3/4" away from the strings, too.
Sidenote, I'm having the same issue with my P-5 after stringing it with a set of GHS Brite Flats that arrived today. -_-
I'm going to try the suggestion of fixing the twisting & see if this helps.
UPDATE: "Untwisting" the strings & pushing on the string between the pickup and the bridge to change the break angle worked! Now there's lots of life to the strings. I'll keep this in mind for next time. ^_^