Definitely do not toss it. You could probably (as in, I probably would, depending on time), find someone who would be willing to clean and bolt mod it if you pay for shipping both ways plus parts. If you're in CONUS, that would come to about $25-30, depending on shipping costs, more if you want new springs (which would be a good idea, honestly, but not necessary).
That said, it really isn't hard to bolt mod if you have the tools and the patience. Just take it slow and pay attention to what you're doing. First time takes a few hours, but is totally doable. And make sure to thoroughly clean, and then thoroughly dry off, all of the parts.
Denture cleaner is your friend for the keys and caps, the membranes can just be wiped down, and the rubber mat can be gently washed with dish soap in the sink. Just MAKE SURE everything is FULLY dry before you reassemble, especially that mat.