I will NEVER purchase a keyboard or controller with a Fatar action.
Never.

I've had two of them, an Ensoniq (Fatar action) and a Fatar StudioLogic Controller and both have the reliability of a Ford Pinto.

While I owned them, I became an expert at gluing the weights back into the cracked plastic "hammers", replacing the felt bumper pad and other necessary repairs.

Fatar uses a very brittle, cheap, plastic inside that cracks and the parts go flying everywhere.

It's the plastic equivalent of pig metal.

Maybe they have gotten better over the years, but I won't go near one.

Just my 2 cents.

If someone is interested (as I was), the escapment kit is NOT suitable for NUMA Nero.