Hello, I have a grandeur with LP-gas Tartarini. I am satisfied by all things. For some time the checklight has always lighted up. Workshop said first, it has to be re-set mixture setting). Now after days of rum try it should lie on the valve play. The setting is very time- and expensive, because the engine had to be removed. I have never heard of this before. One speaks of costs about 1000.- €. I am pulled over the table ode Then it would have been my car the longest. Who can give me a coherent place and help me. I thank you already.