I second that, mine is the same setup except Im using MA 13x8 and using Spring Air Retracts not mechanical. Been going 12+ months now and still going strong. Yes you have to add about 400 odd grams of lead in the front with a 91FX to balance (short nose), but it has plenty of power and is Joy to fly. Flys like its on rails.

Other one at club has been flying 2+ years now, with ST2300 and Air Retracts and is also flying very well.

Needs an relatively experienced pilot to land, but not overly difficult, you have to fly it in like a real one