Easily find resistor values http://www.the12volt...s/resistors.asp

MBHP parts kits and boards http://www.mikes-elektronikseite.de/

MBHP parts kits and boards http://www.avishowtech.com/mbhp/

Useful Information http://www.discovercircuits.com

Wide selection of parts http://www.voti.nl

Good place for tactile switches and other parts http://www.awatronic.co.uk

Parts (low UK postage) http://www.toby.co.uk

Synth restoration and parts http://www.technologytransplant.biz