Centre cleats for a Centaur

I am looking at fitting centre cleats on Gemini, and cleats such as these are just way to expensive:

So I am looking in to geeting some bespoke cleats made ot of 316 grade stainless steel, her is what I have so far:

toerail

toe-rail-sketch

 

centaur-toerail

The idea is that these will just drop over the toerail and be secured with sikaflex and 3 bolts.

Here is the finished article:

centaur-centre-cleats-2

centaur-centre-cleats-1

This is the genius bespoke stainless steel fabricator that made them.

Now fitted on to Gemini: