Does anyone have a picture or schematic of a Smith's 2602/00 tach that identifies the capacitors? I wish to change a capacitor or two in mine as the tach reads high and drops back to zero at about 2500 rpms, but the some of capacitors in mine are not labled or are unreadable, so I don't know which is which. I want to start with the .22 uf cap as I understands it is frequently the trouble spot, but don't know which one it is.