Thomas,

Please give me your address and I will ship you another set for $9.95 shipping handling packaging etc. but otherwise free. The reason they crack is there isn't even support under them and they are over tightened. Put a little gasket sealer in the screw threads if you are concerned about the screws backing out but just tighten them snug. The light fixture is captured by the outside bracket mount and the Light Saver and will not fall out. Tightening the screw more does not secure the light better, it only cracks the Light Saver tabs. Anyone with cracked Light Saver tabs should just send $9.95 to porschetaillight@gmail.com, and I will ship you a set of replacements if you are in my database as a past customer, no questions asked.

Clint Hightower
Hightower Innovations
Rennfix.com