I've just bought 2 new track control arms for £50 from MAD FOR IT on Ebay. They have a slightly thinner casting.

Have casting materials improved in design or could I have bought inferior parts?

Wish I had £300 to get some of Brom's bad boys!!! I've got tyre wear on the outer edge on both front tyres. Will a -25mm drop cause this assuming the tracking is spot on?

Where do you guys get your track control arms from?