Yes, it looks like you could bolt two chunks of steel on ether side of the head light bracket.
Maybe start with 1/4" x 1/2" x about 1 1/4" long with a 1/4" hole in one end accordingly.
If it doesn't stop soon enough - use thicker steel.
Conversely, you could add bolt on rubber stops to the frame.( These hit the forks)
I have done this on some race bikes and it works great!
I don't recommend welding as it can change the heat treatment down to T-0 (Very soft) plus it's a casting!!
This photo is my 87 1100 with custom yokes...