Nice development effort, I was going to say be sure to use vacuum to pull out the air bubbles but it reads like they did, with two part materials, it pays to use vacuum after mixing the components and before introducing it to the mold, I am always surprised at the amount of air that gets introduced as part of the mixing operation. This effort reads a bit more analog than your earlier inquiry of having a tool cut from data.

I would also be able to use a pair or two. Two bikes with Universals.