I went to the lhs and they only had align 315 blades. I purchased the baldes made a spacer for them to fit the grips and hovered a bit everything seems fine. I was thinking about head speed and I don't have a tach but can tell that it has increased. I was wondering if anyone had experience with the 315 blades on the 400 or had an idea of what the difference would be. I changed the pitch curve in attempt to lower the rpm's slightly but do not think that it made much of a difference. thanks in advance....


sorry moving post to the general q's one