When working on collimating and aligning my RH200 scope, I came across a post on the Officina Stellare forum where somebody from Officina Stellare talked about a new tip-tilt mechanism that makes it easier to align the imaging train. And that Officina Stellare sends upgrade kits free of charge to customers. Mine came in the mail this week and I installed it today:
After I was done, I realized that there is a small gap between the back of the OTA and the backplate. When taking dusk/dawn flats I have to make sure to cover that gap!