Hello everyone, friends. I bought a cheap rectangular generic guitar hard case for my Jackson JS22-7 and would need to find something online to stuff it in the corners, especially the tip of the headstock. Can you please advise me something like this? The ideal would be blocks of rubber, or foam rubber, or in any case of soft but resistant material. I would then like to be able to cut and paste it in the parts where the guitar hits. Thank you.