I have a Kohler K-10412 single control kitchen sink faucet that is leaking. I have read earlier answers on this site about how to repair it, but I am stuck at the point where the handle has been removed. How do I remove the bonnet, part #1003662? The directions said "lift up part 103662", but I can't. Does it really just lift and I need to use something to pry it loose? Or, does it unscrew, and I need to buy some kind of wrench to do it?