I'm in the middle of modifications on my FBJR 2003 cream board & it's calling for swapping out the master volume & reverb pots to 50k audio taper. Only problem is, the brilliant and lovely technical genius' at Fender discontinued 50k audio taper pots. Now you can only get them in 250k & 1m.... (unless you want to pay $27 plus shipping per pot from some generous gentleman in London, which... WILL NEVER HAPPEN). Could somebody please tell me which, if any, of the two audio taper pots available i can substitute for the 50k? Could i use a 250k or 1m instead? Will either of the two suffice? Thank you guys!