Just got the older version of the M1 off a BST deal. I like it, but the response is starting to go, so I want to replace it. Can you still find the old pads anywhere?
Flowable silicone.
It’s a pretty shallow space, have you tried it?
Oh, my bad, I didnt know it was a shallow space.
I would contact One Drop about it.
All good man. I’ll do that. 
Edit: Check that, they’ve got the pads in their store.