I just installed one Fender Stealth String Retainer on my 2012 Fender AS P5 and it significantly increased my B-String tension. This stealth string retainer is an above and beyond improvement over what can be achieved from simply/only properly winding the B-string on the tuning post. The B-String now feels similar to the E-String. Great product and I only wish I thought of it first. Ernie Ball Flats (Blue Package, not of the newer Cobalt variety) strings with a .130 gauge B-String.
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