The only thing I didn't replace where the guide pins as they didn't come in the bigg red kit. But I am going to order them as the bottom pin (with washer) on both was quite pitted and rusted. I cleaned it up before reusing. However I noticed the channel in the carrier of the lower pin (both sides) were also pitted. I used white vinegar as a rust remover but that doesn't leave the walls smooth obviously. While the brakes are no longer binding, the caliepr doesn't move as freely as I think it should and I think they are touching slightly still. Will the new pins sort this or are the carrier channels shot and what can I do about them. I imagine I can't drill them at all as the tolerances are probably right I'm assuming.Thanks for any input.