x9 shifter with a different index plate
damn you to hell, I’ve been trying to find one of those Zerode plates (or complete shifters) for ages!
Sorry, no advice that can help but there is a VERY knowledgeable chap on the CTC (Cycling UK) forum when it comes to Alfines, repairs and rebuilds and all sorts so if you’re a member on there might be worth hunting him down and sending a PM.
Other than TJ’s advice RE: Indexing I’ve got nothing more to add as mine have all been reliable enough that I’ve never had to do anythign other than indexing, it is worth playing beyond ‘the dots line up’ though as like TJ I have one that needs under-aligning, and one that needs over-aligning to shift sweetly.