Hello all

Many aerobatic planes that I have owned have had a troublesome characteristic that I would like to better understand. When pulling elevator to point just beyond the low rate limit suggested by the manufacturer, the plane rolls more-or-less violently to the right. This does not happen when pulling quickly through that position - such as when pulling 3D rates to effect a wall or initiating a hover or elevator. It just happens when pulling the right/wrong amount to an elevator position beyond low rates but at the lower end of the 3D window of elevator travel. I have seen this in 40 size plane, dramatic with older Hangar 9 Edge 540, with GP Patty Wagstaff Extra 300, Lanier 120 size Edge 540. I really don't see this as an accelerated stall and snap, but I guess that may the case. For those of you who know what I am talking about - its quite distracting as this sudden unwanted event in 3D flight mode near the ground is a bad thing. Interesting (to me) is that I do not get this with Hangar 9 330L 33% Extra - so that is the only plane I like to fly these days. I would really like to understand what causes this and particularly if there are measures to correct or avoid in first instance.

Thanks for any thoughtful comments.

RJM