I know my 2 cents doesn't have anything to do with the performance or actual operation of the governor but I'd like to share my experience I had with IVO with you. I purchased the IVO with inflight adjustable and the governor. I can't say enough about the IVO prop but I never installed the governor and since I had no use for it, (couldn't find a good place to mount the controller) I called IVO to return it unopened for a refund. I got the refund alright, less a $100 restocking fee.Oh well, Live and Learn