I have had a Raypak 265-280?K BTU about 6 years. 2 years ago, the igniter stopped lighting up the flame. I use a lighter to ignite it and this has worked for the 2 years. Now the ignite will spark (with the code on the unit as SPK), but even with a lighter, the unit does not flame up. I suspect that there is no gas going to the burners. Anyone have similar issues? Could it be the gas regulator (I've turned it off and on many times), or a clogged gas line. Of course, we have company coming over tomorrow! Easy to clean out the gas piping? I installed the unit myself so I can probably do the work myself with someone's suggestions or experience with same.