Old 07-26-22, 06:14 PM
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Bikes: 2003 Litespeed Tuscany with Ultegra R-8000 components

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Originally Posted by cxwrench View Post
2mm allen to adjust the 'support screw'. And to correct the Shimano manual not all frames require the backup plate. With some frames the screw hits the braze-on mount itself, so no plate needed. On some frames that read is reinforced, like Trek. They have said for years the plate is not needed. Since there is a 'support screw' you'd be mixing things up to call the clamp or mounting screw by the same name.
Exactly , 2mm allen for the support or aka stabilizing screw and the 5mm for the clamp screw
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