I recently picked up a 4x5 Beseler condenser head for a fairly low price. Unfortunately it wasn't packed well and showed up with chips in the lower element at the three locations where there are retaining "clips" (for lack of the apprpriate term). Given the price it's not worth shipping it back. So my questions are: [A] Are the elements symmetrical? They appear to be. Should I flip the damaged bottom element to the top, under the same thinking that a scratch to a front lens element is "better" than a scratch to a rear element? I would use a Sharpie permanent marker to black over the damaged areas to reduce reflections. [C] Before I spend my time breaking down and reassembling the thing, how much will this really affect the image making? I'm hardly a pro, or trying to make my living at this. I bought the condenser head as a back-up to the color head I currently have, assuming that the dichroic filters will eventually go.