Yup you can see the prop flatten if you look really closely on the ground (don't try it to often) and another way you can tell is say When I had my APC I had awesome vertical and it would hover and pull out with alot of athority.. Now throw on the ZINGER it turns Higher pm's due to less weight still good vertical but suddenly you realize when you pull into a hove and you're having to hover at over 1/2 throttle where as the APC was at 3 clicks less thatn 1/2... Now Punch it... wait a few seconds, engines screaming, but the planes BARELY climbing out.. It's either flatening or a very inefficient prop.

Got my Mejzlik in yesterday.. will run her today but it's 20-30 mph winds here so no flying[:@]