I purchased a Winnebago Itasca a few months ago and was told that it was running lumpy on LPG so needed servicing. Having had the petrol side of the engine serviced, plugs, leads, distributer cap all renewed, I was told by an LPG specialist that the exhaust manifold gaskets were blowing and have been quoted about £400 by my usual garage to replace them although 2 of the mechanics say they arn't blowing and 1 says they are slightly and I cant tell as im deaf and dont know what im looking for. The LPG is a LO-GAS single point system with lambda feedback and has had two air filters changed. I only do 100 miles a week but am planning on touring spain for the winter, though I know PLG service stations are a rarety there, so dont want to spand much money if its not going to be re-couped. So I suppose i'm asking if any one has any similar experiences or can offer advice as to what I should do, bearing in mind I have VERY little money.