I bought a Veco 19 and a K&B 61 from MECOA in recent years. No problems getting the engines. The 61 is the regular version, not the twister, and it came without a muffle, btw.
MECOA's property is being taken for some kind of development, which is why they're moving, so it's perhaps understandable we may have trouble communicating with them for the next few weeks. I was looking for them to have a moviing sale, but it didn't happen.
One of the "cable" channels, Discovery maybe, did a feature on MECOA, showing how engines were made. It also showed the owner running a diesel on a test stand and flying an R/C. He seemed like a decent guy.
Bob in NEPA