Basilisk ultimate water damage

A small amount of sticky liquid was spilled on my basilisk a couple weeks ago. I immediately unplugged it, turned it off, and put it under a fan for a while. It seems to have avoided any short circuiting and it generally works fine, but some of the sticky liquid has dried under the RMB and intermittently causes it to jam making the RMB unresponsive. To get it working again I have to jiggle and mash the RMB until it frees up again. I have to do this every hour or so during use.

Is it possible to open it up to clean it without causing damage? Is there an alternative solution?

Thanks.