I just found the BEST tool for working on helis..
http://www.hudy.net/xhudy/products/p...&kategoria=538
This driver is INCREDIBLE - I had a number of hex screws with heads that I thought were"Stripped" as none of my other hex drivers worked.. they just slipped..
This HUDY driver locked in tightly and I could tighten the hex screw as much as I wanted.. NO slippage at all..