Wow, I hope this doesn't color your thoughts on the ruger wheelguns!
My sp101 was perfect out of the box, maybe a 10-12lb DA pull and a 4-5lb SA pull. Just my guesses based on knowing my Glock is a 3.5lb pull.
I bet when you get it back from them, it will be a great little gun. I'm sorry you consider it a mistake right now, though. Sounds like it has a burr in its clockwork somewhere.