I'll offer a hand on the search, try this
winterize - Google Search
That is using our Google Custom search feature. It produces easier results the the actual site search feature. Here book mark this for future searches
Google Custom Search for SOC
Here is another good resource, our files section. On the top of the forum page is a tab called "FILES" click it and all kinds of good stuff shows up. Here is a hot link Sunline Coach Owner's Club - Sunline Owner's Files
You need to be logged in to use it and then download files. If you go into the "Sunline Tips and Guides" section there is a Sunline Winterizing Guide you can download with step by step instruction.
I will add one more thing, your mentioned a leak, going into the winter season with the camper living out side it is a good practice to inspect the roof caulking now before winter sets in. Fix "now" any tiny slits or splits in the caulking. Then come spring, do an inspection again. If there are tiny splits in the caulking now, water can get in them, freeze and widen the split. This can keep going on over time to where that tiny split turns into a full blown crack that later opens up to let water get in.
Here is one "How to" method and it shows how prepare for walking on the roof and not come through. Most Sunlines TT's do not have walk on roofs and we need to take precautions to not damage the camper or worse, you. http://www.sunlineclub.com/forums/f7...1-a-11508.html
Hope this helps and good luck
Current Sunlines: 2004 T310SR, 2004 T1950, 2004 T2475, 2007 T2499, 2004 T317SR
Prior Sunlines: 2004 T2499 - Fern Blue
2005 Ford F350 Lariat, 6.8L V10 W/ 4.10 rear axle, CC, Short Bed, SRW. Reese HP trunnion bar hitch W/ HP DC
Google Custom Search For Sunline Owners Club