LouW,

I think your pros and cons are generally on target. Diesel does not have to be as stinky if you can keep the raw fuel off your hands. My Davis converted Mecoa .46 runs great in all respects. Mr. Davis can be gruff and his prices (and shipping) are high but he does know a lot about model airplane engines and will help you. Diesel is different! Look at the attached stink reducing pics. Ignore comments about PAWs being 50s tech they are fine for the appropriate application.

Oily in Germantown

Francis