My ears are ringing like CRAZY

I clench my teeth at night. I had an old bite guard which had a big blob of hard plastic that only touched my front teeth, and that seemed to work great. But it's totally busted.

So I have a new bite guard from the dentist, hard plastic kind, but with this one I contact everywhere when I bite, so I just seem to grind on that instead of my teeth. Probably helps my teeth but my tinnitus and TMJ pain are not being helped at all.

What's a boy to do? I guess go back to the dentist and get it radically altered / another new one? But insurance didn't even pay for this one