I've been awhile getting back to this. I've been searching for Kong dual ascender accidents. I'm sure they exist, but I come at this from a solid 8 years on the duals as my primary ascenders, for both SRT and the doubled line 1:1 ascending method that Quercus is looking to enjoy.
I have other ascenders, though, too. The Petzl ascension, CMI's then other non-handled ones like Pantin, micrograb, and croll.
in '95 or 96 I did exactly what Quercus did to his ascencions, but with CMI's. This involved pulling the cam pin out of BOTH ascenders at the same time, keeping the cams motionless so the springs don't pop and dismount the cams. Then replace those two individual pins with one double-length which jopins the two. Then I drilled 3 small holes, inserted rivets and peened them down. This worked beautifully as the blocky, flat-sided CMI's fit together side-by-side really well. I used these for about a year and then Kong came out with theirs. This was a big improvement as the handle on a single CMI is uncomfortable, and two of them together, doubly poor comfort as far as an ergonomic grip.
To be honest, I don't find the Kong twins to a comfortable grip either. Most of my work of late has been SRT on a blue Petzl Ascension, and the handhold configuration on that is like butta. BUT, except for Quercus' dual ascensions, a dual Petzl simply does not exist, at least that I'm aware of (and having talked personally with the President of Petzl America at a TCIA expo, I have thoughts on why).
Here's a shot of the old, beaten warriors. No loose rivets after all this time, but if the DID loosen, I would either peen the original rivet, or go to the hardware store and get the appropriate size replacement rivet and peen it in.
