The EJ25 heads I had resurfaced and pressure tested are rougher than any set of heads I've ever gotten. Same place I've always gone since moving here, they do the local dealership machine shop work too.   There are visual gouges. The worst one traverses all the way from the combustion chamber to the edge of the head. It gets shallower as it goes and is much shallower by the time it reaches the gasket.   Also, wiping white shop towels across it pulls tiny fluff off the towel.   I'm used