I ordered a 210/5.6 Symmar convertible lens from KEH. The price was relatively cheap, the rating was UG (ugly). I got it today, and it looks excellent plus. Heard that story before? Wait, read the rest. Upon closer examination, the shutter is running pretty darn slow, and there is fungus between the cemented pair on the rear element. Actually there are two of those pretty snowflake fungi in there. Now, to me, those do not make the lens ugly, they make it junk. I can do a CLA on the shutter, but what can I do about that fungus? Having lenses re-cemented is expensive, and no way to know if the fungus has etched the glass until they are separated. Possibly, I could find another with a badly damage front element, would mixing and matching the elements even work? How close are they from the factory? The question is what to do? Send it back for a refund? Try to use it as is? Try to find another rear element? Go rent a gun and blow my brains out? What? In any case, I am limited to low-budget solutions only.