Not so fast....
There is a small area in the centerboard trunk I've found that can hold water, that leaked Rain water or wash water in the cabin....more seeping thatn leaking. Might be this and not something deeper.
On the port side, in the forward settee locker, up and over inboard side. It may be trapped there, the pin for the center board is above waterline.
Sure thing loosen the rudder lower from the upper. I have a strap handle that allows me to tighten and looster w/my boat-hook,
I have a nasty habit of chedking depth w/ centerboard and rudder...just like loosing the power steering when I kick up the lower rudder I feel like I'll break the tiller.