Where can I buy a replacement encoder wheel?

TL;DR: Previous owner asked me to look at it after it had issues with vertical scrolling, tried to fix it and does not want the mouse. This is a $100 mouse (new), so it’s at least worth trying to save.

When you try and use the mouse, the scroll wheel always scrolls down, rather then up; it’s essentially unusable right now since it’s always happening. I already tried cleaning the sensor with canned air, and the issue persists so I did make an attempt to save it for nothing. However, this one uses the LK-E5 (4 wire) wheel, yet I cannot find them on eBay; just the 3 wire :(.

Is there a source I can get 2-3 of the LK-E5 encoder wheel (ideally, with the Razer specific connector)? I tried to find one, and I cannot find one from a domestic seller or a one-off seller from China for the time being. The rest of the mouse is fine, but just the scroll wheel has an issue.