Enstrom
Joe,
with regard to working with the RPM unfortunately you will have to master the art of flying un correlated. Yes I know you do have some correlation but it's not the best and almost not worth having. You have been spoilt in using the R22 governer. Back to basics for you with the Enstrom.
The trim issue is normal in the older 280's. You will master that as well but it can be trimmed out very nicely if you have a real soft touch.
Good luck with the old girl they are a very good machine and very safe.
Have a good 2012 of flying.
Where are you located?