[rcpower]

The stock springs fit of course, however a 1mm larger inner diameter would have been better. They can rub on the threaded shock bodies yes.
The Kyosho BB springs don't fit nice accross the alu spring load collar. The diameter of the spring is just a little too big. It's the same effect if you want to run BB springs on smaller bore shocks. I took some old, big washers and drilled the inside out until I had a perfect fit. If you watch very closely you can see it in the pictures in the post above.

There is no problem with the stock slipper pads however. They work just fine!