I want to replace the tone control on my Dingwall SPJ5. I need to get 1 CTS or Bourns 500k Audio taper pot, and a .047 cap. Where does one go to get these two puny items for a reasonable item cost and shipping cost? Prices are too on Amazon, or they're selling in multiples and I have absolutely, positively zero need for extras or the hassle or reselling the extras. I'll check the local shop tomorrow, but they'll likely be the wrong value or taper or just be absurdly expensive.