I just got my axe 2 weeks ago and of course got one that hops(loses about 12 inches of altidude all the sudden).So I order 3 hs 55 servos and got them installed.Well still have the same problem.Any one else have the same problem.Not too noticable outsied but in the living room can be a real pain.Also about the blade grips,I noticed the replacement I got only have the hex on one side for the nut,so 1 scew has to go in fom the bottom.Thanks for any help.