Yeah I'd just ride it out too. I'd hit it with a Lil dose of pk booster one last time if u have any. I'm a ffof soil grower and for that soil prior to planting I'd mix it with some dolomite and perlite. The dolomite will help buffer your ph as well as having calcium and magnesium in he mix. All of what that soil is lacking. Perlite for better soil aeration. Your cal mag should be a npk rating of 2-0-0. if used alot could helped with the burn. Did you at one point have a nitrogen toxictiy? That could also have led to other nute lockouts.