I have been looking at these and thinking it may be my next mouse. Never soldered anything before, but I bought a cheap soldering iron starter kit thing from Amazon awhile ago I'm up for giving it a shot, especially if you said there's only one spot you have to solder.
How does it feel to use? Sufficiently ergo? Do the layer lines feel weird? I feel like not being totally smooth might kinda grate on me after awhile.
I wonder if you could source a clicky mouse wheel from somewhere as a drop in replacement? My Logitech mouse has a button to turn the detent on/off and I definitely prefer it on, the free spin way just feels wrong somehow. The detent part must be physical, there shouldn't be any electrical difference I wouldn't think, so one ought to work as well as the other.