i have been looking at the Fender vintage 62 ri Jazz Bass for awhile and may purchase it, i noticed that it only had two knobs; so i looked it up awhile ago and found out that all early Jazz Basses had these and the stacked pots were short lived. so my question is, is their a problem with stacked pots? how come they were so short lived? im hoping the only reason they changed to vol/vol/tone is because its easier to manufacture and/or cost effective. because i dont want to purchase this bass a find out stacked pots aren't good. any answers are greatly appreciated, thatnks.