Hi teckjohn. Got it running today. Tried to avoid having to take off the carburetor but nothing else worked. In the end all it took was a good carb cleaning. Besides blowing compressed air through everything, I also used a carb cleaning tool I've used on motorcycles. You can get it here: http://www.motorcycle-superstore.com/14/71/995/10115/ITEM/K-L-Carb-Cleaner-Wire-Set.aspx I know you are not supposed to enlarge the hoses in the jets and they are soft (brass). I am always careful to not force a cleaning wire through a jet. I've had cases particularly on motorcycles where these wires get things out that compressed air and carb cleaner leaves behind. Anyway, after the cleaning and re-assembly it fired right up and ran pretty good. There is a slight leak from the carb though (which is why I didn't want to take it off in the first place). I have ordered some new gaskets. Also one of the round plastic o-rings that hold the choke linkage on cracked. I never did like those things. I am going to try to figure out some other way to keep the choke linkage on the end of the choke rod. The only way to get the o-ring according to the parts diagram is to buy a new choke rod and I don't want to take out the one that is in there since it works fine. So now with a running engine and a waiting chassis I am ready to start moving components from the donor to the chassis. Here is where I could really use some advice as I have never done something like this before. I'd like to avoid mounting something onto the chassis only to find that it is in my way when I need to mount the next thing so I have to end up undoing it. What order should the major components be mounted? Should the engine go in first, last?? Is there any testing that makes sense as the assembly progresses? Would hate to get everything back together only to find out I messed something up which makes me have to take a bunch of stuff apart again. Any ideas are most welcome. I will keep posting pics. Thanks to all who have responded so far. I have read them all carefully - both those from people who think I'm crazy for trying this and those from people who have offered encouragement.