Hmm, I was looking at those specs for the 140 sport and am now concerned I am not getting the full potential out of my 140L...

I am running 30% nitro and it is turning an APC 16x12 at 8k with the Hatori 698 pipe. Is this what you would expect? The plane flies well and it pulls like a train but it sounds like I may be missing out on a few hundred rpm. I am flying at no more than 500ft asl...