I just had a Guy on a Bicycle Touring Group on Facebook to use Sandpaper on my
Front Rim Velocity Cliffhanger 36h 26in MSW Rim
Rear Rim Sun-Ringle Rhyno lite XL 36h 26in Anodized MSW Rim
and I have talked to a guy at Universal cycles in Portland, Oregon told me not to use Sandpaper on my Rim's! and is ok to Scotch Brite Dobie pad with Dawn Soap and water??? and Velocity USA Bike Rim's told me Do Not Use SANDPAPER on my Velocity Cliffhanger 26in MSW Rim's it Void's the Warranty

I had my Kool Stop Salmon Squealing like a PIG on my Front Rim's and
front pad is Toe-in backwards! and
I had Kool Stop Dual compound Black/Salmon did not Squeal like a PIG!
on my Rear Rim!

Biketouringhobo

I am doing my Homework