My printer has worked fine for a long time. Suddenly, I can only get decent printouts of text with the Best mode which, I assume, wastes expensive ink when printing non-critical documents. The Print Quality Diagnostic Report looks beautiful. I have done everything that websites suggest: using HP catridges, cleaning the cartridges, aligning, etc. When the problem first started, the ink levels were high. I've even reinstalled the software several times. How do I fix these horizontal streaks for Draft mode?