To me, the important factor would be how large are the bubbles. Most, if not all, roofs have some sort of bubbles in them. If they are large enough to "flap" when you're moving down the road, then I would probably use needle injection to first remove the air and then inject an adhesive/sealant to the affected area. To you, the important factor may be what you expect Heartland to do; repair as I suggest, or install a whole new roof? I learned a long time ago that if you can live with an imperfection, don't touch it. Sometimes correcting a small issue can develop into a whole different set of deeper problems. I know it's hard because your rig is only 4 months old and you clearly spent your hard-earned money to buy it. Best of luck.