Can't say I've seen it on the side seams. I've seen bubbles around vents and a few on end cap seams.
As long as the membrane is intact, I don't see any issue with popping the bubbles. We use the spray cleaner "Fantastik" with a clean rag to wipe the seam and after its dried, either Dicor or Sikaflex will adhere.
How they got there is anyone's guess.
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2012 Copper Canyon 273FWRET being towed by a 1994 Ford F350 CC,LB,Dually diesel.
Airlift 5000 bags, Prodigy brake control, 5 gauges on the pillar.Used to tow a '97 Jayco 323RKS.
Now an RVIA registered tech. Retired from Law enforcement in 2008 after 25+ yrs.
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