Bought my Blade 350 some months back. Bought it in a BNF mode and been using a DX-8 to control it. Liked the idea of the "original" controller where the sticks are both centered. Went back to my local hobby store and he sold me a modified DX-4 - worked like a charm - until yesterday. Suddenly, the "kill switch" (which is also the bind control) no longer kills the rotors. On both the DX-8 and the DX-4, the same button used for binding is used to stop the props. But, for some unknown reason, the Bade decided that wasn't enough. I tried a couple of times to use the CSC, but it is almost impossible to avoid flipping the Blade over. I dumped it once on the driveway, then moved it into the grass for more testing. Same results. Redid the bind to the DX-4 - still can't stop the rotors. Drug out the DX-8 and redid the bind on that one. Same result. Finally discovered, very much by accident, that if I pulled back on the left stick (descending mode with the centered sticks, low throttle on the DX-8) *and* pressed the bind switch, the motors stopped instantly. That's not the way they're supposed to work, but I figured, okay, they now have a mind of their own. In the meantime, I lost one of the plastic washers used in the retaining pins (two in opposite corners through the rubber shocks). Snooped, sampled, waded through the grass to no avail. Dropped a note to Horizon Hobby, trying to find a part number to order some more. Within a day or two they politely wrote back (paraphrasing) that "...they were not designed to be sold individually...." Well. Got online and looked elsewhere and, to make the story a tad shorter, I found some pins for sale that are designed for a ZenMuse gimbal system - one of the ones used on the Phantom series. I bought a package of 10 from Drone Nerds in south Florida of ZenMuse ZN#-3D Spare Part No. 40 - Damping Unit Securing Kits. They pretty much fit the Blade 350 AX3 *and* they're a reasonable fit on my Phantom 3. They were either a whopping $5 or a shopping $3 - if you need 'em they're worth a lot more than that!
