I never said it didn't run,if you read the post I wrote it states that it takes alot of work on the behalf of the kit casting buyer to get this to a complete and WORKING engine. By the way my mistake, you guy's were talking about an 1/8 scale merlin for which I did not know about and know glad to have found out about,and would like more info on. Especially if this engine is going to be put into production for purchase. Also the mahue merlin is 1/4 scale.