Stew:

There are many threads here about maintenance, repair, and general care and feeding of four stroke engines.

If you are comfortable running the two stroke engines you shouldn't have any great problem running a four stroke engine.

It would be best if you got with another flier in your area who is already running them, there's enough difference that you can run into trouble. On the other hand, if you read, understand, and follow the written instructions that come with the engine you should do fine.

Bill.