It's also possible that you had a dirty bottle. I cut the loop off the end of my bottle brush, and chuck it into the makita cordless. Just give each bottle a couple twirls, then inspect visually when rinsing. Some bottles that have been left standihg can have a ton of hard to remove gunk inside. Being your first batch, you probbably had some of those.
So far, I've had more experience thinking than I've had brewing....you don't think they are mutually exclusive, do you?
72 batches so far,
48 wine, mostly Loquat, peach, plum, prickly pear
23 beers and ciders
1 Tequila, from a prickly pear wine experiment that didn't work. I call it "Prickly Heat"