Hi there, I own an old bass guitar, which I would like to restore. It is equipped with a four-string Tune-o-Matic bridge, which I would like to replace, too. Post-to-post spacing is about 85 mm. I just found these ToM no-name bridges: WD music CH Guitars UK eBay UK #1 eBay UK #2 BaCH musik CZ ... and many more. Are they in fact all the same? Are there any better quality bass ToM bridges available then? Do actually manufacturers such as D'Angelico or Gibson have some custom made ToM bridges for their basses (EX-Bass, Les Paul Bass), or do they simply use these cheap models?