Chris / David:

You guys are running with the high pitch IVO blades aren't you (should have a "+" on the blade root)?  An RV-6A driver in Canada really likes his high pitch IVO in-flight adjustable and he is getting book "RV" speeds out of it without any problem so you should do fine as well.  I have the regular blades that came with my engine from Tommy James and his Glastar and that is what I am going to initially fly with but am pretty sure they won't work as well at RV type speeds so will probably get the high pitch blades eventually. 

Doug Lomheim
RV-9A, 13B   

Christopher Barber wrote:

While I was waiting for it to cool I decided to flatten out the IVO
in-flight adjustable pitch prop.