Gas flow is controlled by a solenoid valve. I haven't checked the glow plug coils, but lighting the propane hasn't been a problem at all. Shutdown stops several seconds into the process, with idle RPM almost achieved.

After perusing other threads, and based on experience gained from owning three JetCats myself, I thik the next step is to try upping the u-accel2 parameter on the GSU. I wanted to try that at the field yesterday, but I couldn't remember how to get to it in the Limits menu.