I've been dealing with an annoying leak lately and the ink test confirmed that the leak was around the lens for the fiber optic light. I am trying to take it apart to find the worn / damaged gasket / oring. I drained the water to below the light and fabricated a tool to unscrew the "lens nut" which looks just like the pentair 22100100 nut found here http://www.poolpartsonline.com/p-970...-lens-nut.aspx The plastic lens nut is cracked in one part but I don't think that's causing any leakage, I'm looking for a gasket or oring and do not see one in there. This diagram http://www.pentairpool.com/pdfs/Fibe...AssemblyIG.pdf shows that if I unscrew the lens there will be an oring in there. I cannot figure out how to unscrew the lens and it doesn't budge with my fingers (it is recessed in the housing). Is there an easy way to do this?