Hey,
The movement is the AS2073, here’s a standard shot of it from ranfft’s site:
http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&69&2uswk&AS_2083
To answer your other question, yes I’ve taken it apart to fix it, it’s a terrible jump system and have actually had to repair 3 other Sky Rakers from other owners because they are just that bad.
Here’s a photo of mine the first time I got into it:
View attachment 1613893
Hopefully that helps with your design.
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