I have the .60 CD as well. The wooden airframe structure is very well made and easy to assemble and it has very durable covering. The clevis/horn/rod hardware is cheap looking but mine has held up well for a total accumulated flight time of about 90 hours.

As Soarrich says, the cowl is a flimsy ABS affair - mine is just starting to develop fatigue cracks. The stock landing gear wire is softer chromed steel that can be inclined to fracture. Using standard US-made music wire of the same guage sorted out the problem with bent gear for me.

If I assembled another one, I'd use more right thrust on the engine mount and would reinforce the cowl with glass. I'm using an OS .91 S2 with pump in mine.

It's been a fantastic model with great flying manners.

I have heard that the .40 ARF's ailerons are inclined to flutter at speed. Unlike the .60 sized ARF, they use a single aileron servo.