saddle – it's a Velo 1205, we chose a simple cover without any stitching, the basic shape is the same one that Charge and a few others use, we've always used it as it seems to suit so many people. I can never figure out how Velo make so many great saddles for men – almost the entire staff there are women!
Screws – if you use them to lever or tension the axle they may well bend, they are simply for positioning the wheel only. The axle bolts are what holds it all in place, tugs can back that up if you feel they're needed buit we've never used them / needed them. Some green iO ID's in 09 had excess paint and i know slippage was caused bu the paint thickness, but honestly i've never had an issue on my flyer or iO.
we're looking for a more Paul's style end for adjustment ease w/o tools, maybe a size larger bolt with bigger allen head for strength, but anything like this will bend if the wheel is loose or you try to force the axle along with it. we're not the only ones using this system – how do people find the angled screws on the Cotic Simple, or other droputs using an inline screw?