Went out last night on the recently purchased Super Rocket after making it (just about) roadworthy. The run was successful in that it pointed out a few more jobs which needed to be done. The head gasket started blowing and the back brake is useless! I tackled the head gasket today and, in the process found that the carb is incorrect. It is fitted with a 376 (1.062") and the head venturi measures 1.125" so I dragged a 389 out of the bits box and fitted it after completing the head gasket job. I've sacked the air filter so gone straight up to a 400 main jet. The bike has an SRM engine but it whines a bit, maybe from the timing gears. I bought the bike from an old guy who hasn't used it for a long time and we both knew that a lot of recommissioning was required. I've decided to resist the temptation of restoring it and to leave it with its 60+ year old patina and battle scars. Work undertaken so far: rebuilt gearbox and replace sleeve gear/mainshaft bushes, swap 6 spring for 4 spring clutch, weld kick lever on centre stand, fix oil tank connectors, replace cylinder head gasket, remove crash bars and rear rack, fit 389 carb, two new tyres, new primary and secondary chains, rebuild dynamo and fit DVR2 (still 6v), fit ATD whilst retaining the manual advance/retard (makes starting easier and eliminates ankle-breaking kick back!), change all oils, replace rocker feed pipe, fit bigger front sprocket, repair casting flaw on inner chaincase to stop it leaking (success!), remove siamese exhaust system and replace with twin pipes (a bit scruffy but suits the bike!), fit new batteries and battery box, tighten swinging arm pivot (I will replace the silentblocs with a bush kit at a later date). After replacing the head gasket and carb today I started it up in the garage and it sounded pretty good so I'll be taking it out on a short run tomorrow and will report back. Photo shows bike 'as found'.