Originally Posted by khuon
Here's a trick. If you want to make it extra durable and stronger, ditch the bearing retainer and run loose balls. If you get rid of the retainer, you can add an extra ball in there. The upper uses 5/32" balls and the lower uses 1/4" balls. Another headset you might want to consider for strength is the Pig DH Pro which uses cartridge bearings.
This applies to any ball\retainer fitted headset? (excluding the ball size.)