your dealer should have told you to wet the canvas BEFORE going out camping.
also should be something from the canvas manufacturer about "seasoning" the canvas seams.
if your dealer didn't mention it or do it for you, before you picked it up, they did you a disservice.
the threads in the seams, will swell from getting wet(seasoned)and fill the seam holes once they dry out.
if the seams continue to leak, try any tent seam sealer.
and Zoe the Wonder Dog(R.I.P.)
'07 Roo 23SS pushing an '07 Chevy Avalanche
Equalizer WDH and Prodigy BC