I have a Dometic 3-way fridge in my PUP. The last couple of times out, it didn't seem to cool well when operating on propane. I cleaned the gas orfice with alcohol and blew it out with compressed air. Then I cleaned the stack. Now it doesn't work at all on propane. I set it to propane and it does nothing. The ignitor doesn't spark and the check light comes on after a few minutes. I have checked all of the fuses and the battery is charged. I also tried it with AC power connected and I got the same result. I may have knocked something loose when I cleaned the orfice, but I can't see anything out of place. I can take it to a shop if I need to, but I'd like to find the problem if I can. Does anyone have any thoughts about where to look first? Thanks.