I use a nasal flush and have a thing called 'nozeoil' - believe its sesame oil or something similar and also lubricants but i find the crusting is way up of the back area of the nose and forms a solid bloody crust. They seen to go along the sinus passage (I hate talking about this its gross but I guess we are all the same boat) they are tubular and normally 4cm or even longer in length. When and if I can get to them (my goodness I can feel it coming away from the sinus walls and feels wonderful when out but doesn't take long to reform) as I mentioned it completely seals up so nasal sprays and lubricants don't really help - I need the scissors and separator my ENT use.... what fun!

Like you Jack the sinus was my original initial symptom and seems to be again.