5.2 fixed the spawn rate yes. I felt bad for a minute when I was 200 exp from 25 after doing Payne and went to find a wild pet and the first one I came across...you guessed it, a rare Scourged Whelpling. Which I preceded to kill for the 200 exp and move on with my day. lol
Found a poor one fairly easy after long long searches. Fortunately I have a couple of undead battle stones. Came across another one later but didnt go for it since I don't particularly care for different breeds and am not greedy.
I camped them for a while with no results. Yesterday i was going for Payne to Argent Tournament and i found two poor quality whelps I captured one and let the other for someone that doesn't have one yet.
Good to hear they upped the spawn rates. My experience was total poo to be honest and I ended up blowing a stone in the end to get it up to rare (I know many others did the same). I'm all for a challenge but it was a little ridiculous...