@JoeFridaySays, that idea would work yoo, but adds more springs and complex movements. I do like the CH having a pin to engage the bolt.
The one I drew up uses 2 slots on right or left of the s2k tube. The mechanism doesn’t have any pins springs or anything besides the solid CH and the j hook thing. It would use a pin with the recoil spring perch cut into it. It would have a bolt hold notch at the rear of the sleeve. There would be a detent in the front and a matching dimple in the CH to lock it forward so it doesn’t flop around. I honestly don’t think the cnc work would be to complicated it’s all straight cuts and holes. I’ll draw up some better pics on paper and not on my crummy phone.
BTW @Johnksg found what blew up/melted the microwave! Blown thyresistor, which took out some resistors and a small fire. But got new microwave installed and all good!