Rock, my reason for contemplating using 4 servos instead of only two was that I have had a servo die on me inflight which made for a 'dirty shorts' situation, and yes it was a brand new servo, st47 mind you and it happened on my trainer which was an H9 RTF Alpha two weeks after I got my wings. I just don't want a repeat performance of that situation. I have always been a little gunshy of servos since then. I use st125's now except for my throttle and am a proud owner of a DX7. I have good equipment but I am in need of building skills. I am finding out now that kits are a whole lot different than ARF's and RTF's. The one thing that I learned this season is that if you build it well you land on the ground instead of in it.