Simple way to increase pressure required to activate mouse buttons?

Does anyone know of a simple way to increase the amount of pressure required to activate the optical switches on Razer's various peripherals? I'm always firing off desk pops due to damage in the tendons in my lower arms mostly because the older I get, the more difficult it becomes to keep my middle finger still when moving my index fingers. So a heavier spring in the primary mouse buttons would make life a lot easier. Unfortunately, making a tiny spring like and getting it to temper right without it becoming too brittle would be a pretty big pain in the a55. So I was just wondering if anyone in roughly the same situation as I am has come across a decent solution in increase that rebound pressure in the switches.