I have recently tried a different rinse formula that I have found in APUG. To prevent future rinsing problems I would recommend that.
1 oz ilfotol/foto-flo mixed with 7 oz isopropyl alcohol, becomes the stock solution.
Use it diluted 1+25 or 1+24. It works better than plain foto-flo imo. I used bottled water for final rinse and no problems spotted in cough:scanner:cough.