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HP Color LaserJet Enterprise Flow MFP M776zs

I have been DESPERATELY searching for a replacement toner collection unit (3WT90A) for over a month. It is out of stock everywhere (and I mean EVERYWHERE). HP has not been helpful at all with this issue. I can't even get an estimate of when the item will be in stock again. I tried to clean my full unit to see if the printer would accept it with no luck. I know there is no way that it is still full but the machine won't take it. I don't know what to do. I had just spent over $1,000 on replacement supplies right before it stopped working and now I'm reluctantly spending money weekly at print shops to meet my businesses' needs. This can't go on. There is no reason why a machine worth thousands of dollars should be down for over a month for a $20 part. There should be an emergency override or something. Actually, this part should be reusable. With past machines, we were able to wash out the unit and replace it. If anyone has any tips I would greatly appreciate it. HELP!!!

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