I lied. Again, I was villain in all 3 hands. Here are what I have:
Hand 1 7d 6d (a pair of 7s)
Hand 2 7s 2s (busted spade draw) and I showed afterwards
Hand 3 4c 2c (club draw)

In all 3 hands opponents folded. How do I know what opponents had? Well, I don't. Therefore what's in the hand history is just what I think they had.

In hands 1 and 3 opponents are not out of line, solid......maybe too solid. Their EP raises defined their hands too much. Especially in hand 1 when the most he can have is AA, and we all know tight players' aversion to going broke with only one pair. Honestly, I don't need the pair of 7s. I would have made the same play with any two cards.

Similarly in hand 3, there's a good chance that villain has AK (or AA) and is unwilling to get too involved with only 1 pair when I could have a Q or 55. Of course that's also a chance that opponent has KK. In retrospect that obviously wasn't what he had.

Hand 2 was just a desperate bluff attempt; I'm glad it worked. I probably shouldn't have called the PFR to begin with. IMO opponent should call the river; he only needs to be right (that I don't have the Q) ~<1 in 3 times for his call to be profitable.