I would tend to agree that it is rated under the 25 for emissions, and I've seen a higher rating on this- but I don't remember 30. In the Mitzi service manual they give a max RPM of 2730. One would assume that the governor can be fiddled with, but should it be? The Mitzi manual I have was something I stumbled on via the Googler. It does cover spring adjustments. Keep us in the loop.