How do I remove the cover on a Hamilton Beach 22505 toaster?

The lever does not stay down & thought I'd try disassembling & cleaning. There is one screw & two push to release tabs on the bottom at the same end as the lever. At the opposite end are two metal tabs holding the bottom on but but you can't slide the bottom to release them because the cover/case is in the way.

I cannot get the knobs or lever handle off, at least with moderate force, in order to lift the front of the cover. And I don't know what is holding the other end of the cover on.

Any suggestions?

Thanks