To heat up the bolts enough to yank it out and pop in the 440, which would become the BART.
Agree that R2 has been doing an outstanding job giving real value to serious modelers, even if they can't tool everything they would like to.
I'm recalling those chrome slots in a kit... in fact, I remember seeing them on the side of a box and thinking, "darn, those look like they came off the LRT."