I am currently rebuilding an in ground pool 20 x 40 with a liner and need to replace the complete light assembly. I can not find the correct light for the niche that is in the pool. The niche outer diameter is 6 1/4 and the hole pattern is 5 3/4 apart. I purchased a Pentair (640130) Intellibright 5G color 12 volt but is too small for the current niche size. I have looked everywhere on line and can find nothing that fits this dimension. Has anyone had the same problem? and if so any idea on what product to buy that will fit?