I hope I'm not being irritating asking so many questions in recent days. If I am, please tell me so.

I'm having trouble clearing prints. I'm using combination of sodium sulfite, HCA, and Citric acid to clear Platinotype and Cranes Kid Finish paper. Faint yellow brush marks persist to appear on the paper even after 30 min. clearing time. I'm mixing 1 to 1 1/2 tablespoon to 1 litre of water. Should I be using alternative clearing agents or use different paper? Thanks.