There's one way you can definately reduce the blade clack/strikes by 90%... By trimming the lower blades from their original length to 5.5 inches, you can avoid a lot of the blade strikes wihout having to give up hardly any performance or power. A lot of folks have done this because they couldn't get any replacement blades (due to the backorder issues) and were desperate to get back in the air. So, they trimmed down the lower blades that were broken on the tips to 5.5 inches, and Wa-La! Flies pretty darn good and with 90% less blade strikes!