If you're not afraid of working with very small parts you can also try fixing the switch itself. You have to bend a small metal lip and that should fix the issue.
Here is a guide on how to do it, fixed my mouse with that one just half an hour ago.
You don't have to remove that part, if you're careful you can leave the mouse wheel attatched to the mainboard because it's pretty fiddly to get the feather inside again.
I was in contact with Razer support for about a week now before getting the usual response “sorry I checked, we don’t have any replacement parts” and basically told me to go &&^& myself and buy a new one.
I spent more than 100€ on this thing yet whenever I ask support ANYTHING it always boils down to this. This is the third time with three different Razer devices and I always get the same answer.
I’ll try this fix here and if that doesn’t work, this was surely the last time Razer got a single cent out of me.