Keys on my M1 MBP Max Keyboard are not working intermittently. More often than not.

I have a 2021 MacBook Pro and some of the keys are not working, backspace, shift (left), question mark, p, ', ". enter/new line and space/enter keys.

The gap between the keys and the base seem too narrow to admit anything like food crumbs and sometimes hitting a particular spot on the key does the trick but a lot of the time they aren't playing ball.

Anyone else having this problem? This is an M1 Max with 64 GB Ram I got last October.

I have tried using a brush between the gaps between the keys and the base but aren't able to get between the gaps very easily. Is the k/b on the way out? I have AppleCare + so not an issue but mobility problems getting to the local Apple Store make it a bit of difficulty.

Any thoughts, anyone?