I have a 91 300ce, 18 mths ago I had a reconditioned Fuel distributor fitted, I now have the same problem again(once the engine is hot the car misfires and has a serious lack of power splutters then cuts out when the engine is under stress from pulling away, once the car is moving and the revs are steady it runs fine.(until it gets that bad that it wont start) Q.1,Is a replacement one easy to fit? (fed up being ripped off with extortionate prices for work)Q.2, is there anything that would cause it to go again? ANY HELP GREATLY APPRECIATED.