G'day all.. Some time has passed since I did the Mustang and in that time Ive worked it hard and it's not missed a beat that is until just recently...It has been losing power slowly the last few times Ive used it, to the point of it has no power now but still runs just!..... So I went looking as to why? thinking maybe fuel side things I gave the tank/carby a good clean out but it all looked fine as did the air filter, sparkplug was not giving that much away to me apart from not that great of a burn being a little oily but nothing major as in dripping with oil or white from running lean....As I was refitting the carby I spied the decompression valve so gave the hose a suck and bingo! I just got air could not pull the valve up... I did not change the valve just yet as I prefer the process of elimination one thing at a time so just to be sure it was not the fuel side of things and after about 15 pulls it fired up and was no better so next thing to do is change out the valve (ran out of daylight today)...oh yeah I found a new tenant had moved in as well lol...Cheers