I purchased the zkit 5 with the OC2 tube voltage regulator from Steve.  I am using this to power the zkit 4.  I got everything wired up and working.  When I checked my heater supply voltage (loaded) I am getting 30 volts, not the 12.6 volts I should be getting.  I checked my wiring which is pretty basic, 1 15 ohm resistor on one of the yellow transformer wires and all is as it should be.  Any suggestions for possible solutions?  I don't understand how the voltage could be off my this much....

Thanks Steve, i found my mistake, and must stupidly admit that I was measuring the voltage at the wrong spot.  I realized this after a few days ago.  All voltages when measured properly are spot on.  Sorry for the confusion....