I don’t know where in Pennsylvania you are, but if it’s near NJ, you might want to consider contacting Linda Brennan, who is an instructor at Top Dog in Flanders, NJ. Not only has she won the National Obedience Championship with her Lab, Heart, but she has also had Welshies for years, and has one she is showing in the beginner classes now. Even if you can’t do a class there, I’d bet she would do a private lesson/consultation and give you some breed-specific tips.