My brother has a SR300 which he feels the jazz style bridge pickup is weak. Both pickups are DX humbucker types, P and J with 500k pots. I've looked around for thread that discuss this issue and was not successful. Should he raise the the pickup for more volume? Use lighter strings for a brighter tone? Change the humbucker P/J to single coil P/J configuration? It has a 473 cap between the bridge and tone pots. Any suggestions?? Thank you in advance!!