Looking for CASIO SK-5 Battery cover Replacement

[noise toy]

Hi, I have CASIO SK-5 with missing the battery cover.
I have been looking for the cover for longtime.

Does anyone know a cover that is interchangeable from other CASIO Keyboard?

CASIO SK-1 looks same with SK-5 but it is still expensive for purchasing just for the cover.

 

[happyrat1]

I realize it's a kludge but maybe you could rube goldberg one from a piece of scrap plastic, some duct tape and a strip of velcro tape?

Gary