I had many, many flights on that setup without one problem. I figured if those mounts were good enough for "fire-breathing" OS 120's, and 160's, Saito 30cc four strokes, YS engines, etc., that they would work for my Poulan, and they did.

There is probably more of a chance of the metal mounts breaking due to a casting flaw than these plastic mounts giving problems, but you do whatever you think is safe. As I said, I had no problems.

Take care,
AV8TOR