I fly the KMP September Fury which is basically the same plane in a different color. I have a Saito 180 in mine I also had to add a fair bit of lead, but it flies like a dream.
Have a look at the video.
http://www.zippyvideos.com/963917512...ury_go_faster/

It lands as sweet as anything, just remember dont come off the elevator until she has come to a complete standstill, the CG should be 110 to 115 mm from the straight part of the leading edge.