I will let the motad guy help you on the exhaust but as for a stop, you could get some high temp rubber about 2 inches long and cut a groove in the middle, not too deep and then zip tie or hose strap it to the bike frame at a location that is hidden and will stop the stand from hitting the exhaust. Cheap and easy and should last a number of years.
The ride IS the adventure. The destination is just to get gas!