I have the 7-35 mounted on an engine stand. I installed and tested the Mcd477-4.8V Pulsed On Board Glow Driver. I'm having a problem getting it to fire. It doesn't seem to be getting fuel to the cylinders. How long do I need to choke it when cranking with an electric starter? Oh yeah, I'm using 90/20 methanol and oil mix. This is my first radial and I'm sure it is something I'm doing wrong. Any help would be appreciated.

GaryM