(This is something I found to help out learning how to pick serrated & spoorated pins, which I found helpful.)
You're using a slimline pick, thinking they are the best picks to use for years, and you realize they aren't the best for every situation. Today I realized that if you use a standard lock pick (medium hook) like the one below (which is thicker and has a wider neck), the thicker width of the pick will allow for better lift of the key-pins than using a slimline, due to the extra hardness and the support of the wider neck of the standard pick, hence it doesn't allow the pick to bend and spring upward with extra force. This allows for better accuracy in the upward force being applied to a pin.

I'm guessing if you're using a slimline pick(like the one below) , the neck of the pick will build tension as your pressing on a pin and finally release the tension on your slimline tool's hook pushing up like a spring (whenever the pin finally budges), causing a possible over set pin, given enough tension and force (which isn't that much).

If I'm wrong correct me please.