I need help in speaker grill repair.

The grills covering the woofers on my Aerial 10-t speakers have four pins that hold the grill on. Two of the pins broke, they are so delicate. Dose anybody have a fix for these pins? Is there a after market pin that I can replace them with? I have been having trouble with the grill covers vibrating with deep bass notes. Can I still get replacements from Aerial?

Thanks
Russ