Can you post a link for that company's website? I'd be interested in seeing the difference. The stock canopy does have a bit of a funny convex shape at the bottom edge of the canopy.
I built an outdoor paint booth yesterday that will allow me to start painting as soon as I have the servos and control rods finalized. Ran the new motor today for the first time. The glow/gas combo makes it an interesting motor and it seems to run strong. They don't recommend breaking it in on the ground so I'll get it on the plane for the rest of the break in
This is a video that was posted when the motor first came out:
http://youtu.be/wif4PgSYDZs