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GriffW, IMHO your rotors don't look so good. Maybe check that your rotors are still in spec with a micrometer. I would think they are, but it never hurts to have a good starting point.
I learned the procedure below from a UPS diesel mechanic.
Every time you replace brake pads, scuff the rotors with a die grinder or drill. Use a fabric disk (approx. 120 grit, sometimes used to remove paint) not a sandpaper disk. You only want to create a light, consistent circular pattern on your rotors. You are not trying to remove much material. Only enough to create a consistent, even swirl pattern. Once complete clean the rotor with brake cleaner and a rag. This procedure will remove any glazing on the pads and help them bite into the rotor surface after installation. It makes the bedding process easier and more consistent.
With new pads I make sure there are no weird, sharp edges or surface imperfections. If there are use some sandpaper to knock them down and create a consistent pad surface.
* ALWAYS FOLLLOW THE PAD MANUFACTURER’S BREAK IN PROCEDURE! These instructions are usually in the box, but they can also be found online. The steps in the procedure are specific to each manufacturer. Their process is determined by the type of material used in the pad’s construction.
Honestly, brake pads are inexpensive enough and way to important not replace with new ones. I've been using Powerstop Z26 Carbon/Ceramic pads. They have good bite and generate very little brake dust.
There’s nothing wrong with cleaning your brake hardware and adding a little brake grease in the appropriate areas. If the pads can’t move as designed, you could end up with a dragging pad or pad chatter.
Switching to Stainless Steel brake lines will improve brake feel by removing hose expansion from the braking equation. Rubber brake lines expand due to the high fluid pressures created during braking. It doesn't seem like much but once that small amount of expansion has been removed, brake pedal feel can be dramatically improved.
I hope your braking issue gets resolved. Confidence in your brakes isn’t optional IMHO. Good luck and have fun!
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