i have the back of the sled lifted in the air and when i got the machine they had the track as tight as it would get no sag what so ever, when i would rev it up soon as i let off the track would stop spinning like right now!:beathead:so i loosend it up now to about an inch sag and i still cant turn it by hand i thought i read somewhere one of the guys on the forum here could spin his with just two finger?