Finally got round to the much needed spur gear for the Coyote , all the gears I've modelled so far have been 0.8 mod but every time I use the gear generator in Fusion 360 they come out bigger than the original gear in my hand and they have to be scaled down a few % to match , it happened with the Dogfighter as well as the Coyote , in fact I have several sets of original Dogfighter gears and none of them are the same size as each other
But none of them as big as those generated in Fusion , if I print the Dogfighter gears at full size the gears bind badly , I tried checking if they were actually a DP gear but the equivalent DP gear is the same over size compared to original parts , I'm thinking that maybe the gear mould is accurate but the nylon shrinks causing this size difference , it's the only thing that makes sense to me .Oddly modern gears are spot on the same as the Fusion 360 gear generator and this causes problems with the Coyote as the modern full size gears just brush the lexan under plate on the Coyote , its not enough to do any harm but enough to mark the lexan slightly
My original chewed up gear .
Test printed gear
If a jobs not worth doing then its certainly not worth doing well.
A problem shared is a problem halved but an advantage shared is no advantage at all.
... And the flexibility works... Not sure which one was possibly breaking the Bumper faster 
