I think there is also a difference in the entry that we both describe. I went to Kirby Chambliss' website and looked at some of his videos. I think the knife edge spin entry he used (as the one that you seem to describe and also found in "Advanced Aerobatics") is to hammer completely over to nose down then an additional 90 degrees to pull he nose up to the horizon. At this point there would be full top rudder and a small amount of right forward stick. The Extra doesn't need nearly as much forward right stick as does the Decathlon to counter torque. So at this point is the idea to move the stick full forward cross it over to the left?The entry I tried was to hammer over only 90 degrees from vertical. At this point push the stick forward. There could be a difference here.