I'm struggling with tearout planing air-dried white pine. Planks are ~20" wide and have reversing grain, making it hard to work with the grain, and tearout is surprisingly hard to avoid. If seems much more tearout-prone, than say, white oak or cherry with similar grain structure. I'm using bevel down Record planes, (45 deg. angle); blades are as sharp as I can get them. I've fiddled with the chipbreaker and moving the frog forward but haven't hit a sweet spot. I wonder if it's time to try one of those bevel-down high-angle planes.
Any advice would be appreciated, an thanks in advance.