No problem Buck, that's what I'm here for...

One more note about the photo above for others reading this thread. You'll likely notice that I still use a check valve prior to the solenoid. This is purely used as a backup and can be substituted with a simple 4mm union fitting, but...... If the o-rings in the solenoid ever fail for whatever reason (contamination by debris for example) the check valve will still prevent the backflow of hot gasses from inside the engine through the propane line. A polyurethane hose won't last very long, even with a short burst of precombustion air. If the hose melts, it'll likely happen under the front cover where it may not be noticed for some time. The only immediate indicator will be a slight loss in thrust, but if left unattended the hot gasses could damage the RPM sensor of the kerosene line. The probability of experiencing this is nearly zero if a check valve is used as apposed to a union...

Kelly