V Brakes squealing on my tandem
I'm not a big mountain biker, so I don't deal with V brakes much. But my new tandem has them and they are squealing and sticking in the back. I've put on new pads with metal holders and also thoroughly cleaned the rims and worked them over with a scotch brite foam sanding block. They are Mavic Aluminum rims. I've toed the brakes a bit, but still doesn't seem to help much. Also cleaned the rims with goo gone and then alcohol.
Are there some secret V brake voodoo steps I am missing?
I've got Koolstop pads, but I am going to SwissStop green as soon as these are worn out since they are my favorite brake pads. Do you think that might help any?