Hi there! I can't see any P def symptoms from those pics but you still have acidic soil so I say keep on flushing with pH balanced water (sometimes even 3 times the size of the pot is needed) or add some flush solution if you have (Humic acid, florakleen etc.) 'cos I feel like you might have something build up there that makes it too acidic or maybe you just have very acidic soil and you need to add something like dolomite lime in there to make it more alkaline