I PMd you back
I know I said I'd post my how to but haven't yet.
But here is my front
Cutting down the posts for stock grommets
I used washer over the posts duct tape and hack saw.
I then cut grommets down. But I didn't use them in my final mount. I took one hockey puck cut it to an oblong grommet. I just laid the 2 stock grommets on the puck and traced. And then cut it in half. Then I shaped/ grounded to length. I ended up with a grommet about 5/8 to 3/4 longer than stock grommets.