First time spraying WB finishes and I have fish eye after a couple of coats. It may be caused by the stearate coated sand paper I have been using so I have switched to 400 grit wet-o-dry which is giving me a lot of corns. I would like to try stearate-free sand paper. Where it can be found easily? It seems that 3X and 7X papers are likely to be stearate treated.

Does anyone know of any products specifically labeled as stearate-free in 400 grit and above? Thanks!