Check out "Chip Ahoy" Homeport
This guy has done everything imaginable to a C22.
Make sure the volcano hose is in good shape-easy to replace-easy for the boat to sink if it breaks. You'll need to check the keel pin at some point to make sure it isn't worn. A hydraulic floor jack works ok-support the keel with the jack, CAREFULLY remove the bolts, then lower the keel a couple of inches to check the pin. Jack back up to replace keel.