Hey guys can someone give a little advise on my 1986 seaswirl 4.3 OMC cobra I/o winterized boat last season left stern drive in down position all winter, raised stern up took it out of garage. a few days later lowered it to get it ready to run and gear oil ran out of the prop housing a pretty good amount 1/4 ct maybe and finally stopped leaking. is this a costly problem? would like to armed with a little knowledge before being hosed by the boat shop.