To the OP: First, congratulations on the purchase of your coach. Second, and not to put a damper on your purchase, but Tiffin had some QC issues for a number of years that could possibly apply to your coach. These are known as the Big Three.
1. Roof rail spider cracks. Tiffin started putting on one piece fiberglass roofs on their year model 2007 coaches and had problems with some of them through year model 2012 when they made a change.
The symptom to look for are fine narrow cracks in the radius portion of where the roof transitions to the side wall.
If that condition exists the fix is to have the radius portion cut away from the roof and aluminum radius sections installed.
2. Wet bay floor rot. You can check for this possible condition by crawling under the coach past the plastic wet bay pan, and using a screw driver push up on the bottom of the floor. If it feels soft or mushy then it is rotted out and needs to be replaced.
The replacement is a non-wood composite material that will not rot.
3. Driver's side floor rotted out. With the DS slide extended, look at the bottom of the leading edge of the slide. If the fiberglass is sagging exposing an opening, again using a screw driver, insert it so you're pushing on the wood floor. If it feels soft or mushy then you have a rotten floor.
The fix is to have the slide removed and the floor replaced.
Some or all of these, if they now or ever have existed, may have already been addressed by the previous owner, which you could verify by calling Tiffin with your coach VIN number.
Again just to be clear, these are only possible issues, and it doesn't necessarily mean that your coach will ever experience them. However I am active on another Tiffin only forum where these issues have been reported.
If you determine that you may have any or all of these issues, please don't hesitate to ask for more information.
I sincerely hope you're one of the lucky ones that will not experience any of the problems listed above, and will have nothing but many trouble free enjoyable trips in your future.
leaving this forum, as we traded in the tried-and-trusted 2005 Itasca Meridian 34H for a 2011 Tiffin Bus 43QRP 
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