Buy a new one, chances are the contacts are burnt.....FYI.....its never a smart idea to spray a electrical switch with silicone lube or any other sort of oily lubricant.....it can cause arcing, non contacting....a host of other issues.....go to the auto parts store and get electrical cleaner and spray the switch out really good with that....pushing it in and out....it will clean it out and hopefully get it working again....another FYI my kickdown switch was 55$....yours is a bargain at 13$....

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