Thanks for the tip. I definitely feel the same regarding a sensation of having to engage abs constantly with the standard seat position on my Machno. Going to give it a go with the folded shim in the back.
Nice tips! Never seen the seat shim idea. If you want that Goop, 100% silicone or whatever it is you use to be easier to work with, put some isopropyl alcohol on your finger. You can make it look real pretty and the adhesive won’t stick to your finger. Plus you’ll have a rag and alcohol there to clean up any spots you didn’t mean to get it on.
That would have worked fine - I ended up popping the pad out of mine and put a Jackson sweet cheeks 100 in now I can adjust it for it I’m running a dry suit or just shorts pretty easy