Have a 2010 Sun Seeker....winterized a few months ago and it is parked on a secure lot. I go every weekend to start generator and drive it. I noticed what looks like a small water spot in the shower right hand side. Do not see water but leaves a residue which makes me think there may be a leak. It looks like at the bottom of the shower...went and checked for any cracks/molding issues on the roof but could not find any...any one have any suggestions?