The lens is a beautiful (to me at least) Gundlach Hyperion Diffusion f4. The shutter has issues but that's not what this is about. I took the front group off to work on the shutter last week. I had set the front group on my counter next to my enlarger. OK, this is bizzarre. The float on the swamp cooler stuck and I got very saline H2O dripping through the roof in my darkroom. Being the lazy slacker that I am, I put a 16X20 tray there to catch the drip because I didn't have time to repair it. Fair enough, but the splatter was reaching the glass on the Hyperion! ARRGGGGHHHHHHHHHHH!!! So I have horrible water spots on the front light. I soaked it in heavy detergent water for 2 days which usually works, but it didn't touch the water spot mess. What should I do. I need to proceed very cautiously as this is a lens that has enormous potential to me. TIA!