Put on a n95 mask and just dremel off the corners of the BR (divide and conquer), with abrasive cutting disc
Do this outside so you don't fill the house with lead dust
I like to leave lots of airflow room under the BRs so they last longer, easy to snip and replace.
030bfd6acbcfa44274dc4a7afbe980b9c8c7149b (resized).jpg