I removed the idle pulley and tried hovering for 2 minutes, the belt is not catching on itself on cross over inside the boom but can hear noise from belt running around the front and tail drive gear, I then put on silicon spray on belt and wow so smooth, free running everything is and quiet. The blades keep spinning much longer now after I have landed with throttle off.
QUOTE from
http://runryder.com 'I went Align office in CA. The Technician told me that i don't need idler pulley, it doesn't give you any better but only problem, so I took that off since than.'