Hi all, I have about 30 Strand 6" Fresnelites that I have been replacing bases on more frequently than I think necessary. The problem appears to be arcing with carbon build up between the bottom of the lamp base and the spring loaded connector in the base. I have tried different brands of porcelain bases (currently getting them from Grainger) and I have even been re-wiring them with high temp wiring. I am now wondering if there is a problem with the distance between the lamp bases and the spring loaded base connector. Has anyone had any experience or luck repairing these things. It is not in the budget to just buy new fixtures. Thanks.