These are hardly a new item on the market-they've been around since the mid 1990s-availability can be a bit sporadic, but they're an excellent item directly comparable in handling to a good Mills-and thanks to their less restrictive porting slightly more powerful than the Mills, I did the original engine test on them published in 'Model Engine World'. Extremely well made, from durable materials they seem to be at least as long lasting as a Mills (and possiblt ultimately better, since they have a steel conrod rather than an ally one-which was the achilles heel of the original Mills...

ChrisM
'ffkiwi'