Hello, I have this bass with passive pickups that are fed into a 250K blend pot and then into a 2-band preamp. The preamp's output goes on a 25k volume pot. I 've been thinking about the possibility of a push/pull volume pot for preamp bypass, but using 25k will be too low for passive pickups in bypass mode. IIRC lots of treble will be lost. What if I use say a 250k or 500k volume pot to accomodate bypass mode? Will there be problems when the preamp is not bypassed?