I had the OS 1.60 on mine....
I sold it for only one reason. Got tired of putting it together at the field. Flew nice.
The only thing that I would change is the covering. The seams do not over lap enough and it needs to be a different scheme on the bottom of the wings. Hard to tell top from bottom while flying.
Was a fun plane to fly.....if I could take it to the field in one piece I'd still have it......
Pug