Oh dude it’s definitely the paint. I also slip out like crazy on spraypainted surfaces with F4s, with the SPFs slightly better but still slippy. Definitely look into those rainskates, when I was skating this one bowl a couple years back it had layers on layers of spray paint which made carving fast feel like skating on ice. Picked up some rainskates stingers and they stuck to the wall, no slip outs. I think they’re produced by creative urethane, but they’re a trip because they carve like a soft wheel despite being 100A, but they keep speed like a hard wheel and rolls with the same feeling like a hard wheel does