In an effort to reduce the risk of fire I decided to replace the lamps in my bedhead cupboards with LED. The lampholders are SES and take standard oven lamps. Quite a bit of heat is generated and not a lot of air circulates. I managed to find LED lamps on eBay. But they are not E14 cap; more like E13. Whatever size they are they do not fit. My initial proposal was to wrap the thread in cooking foil, avoiding contact with +terminal in the base of the fitting. A sparky of my acquaintance loudly said 'NO'. Does anyone have any other solution, other than to return the lamps and continue the search?