I just finished the YA Giles 300/60 version. I put an OS 91 with a pitts muffler in. This bird is very light. I read a report from some dude in another forum that he was taking the OS 91 out because he felt it was too much motor. He said that using a 14/6 Zinger, the bird was an animal with unlimited vertical. I will soon find out. I hope he's right. Unlimited vertical tells me it should hover great.

I'll see.