You were most likely given good info. A good cleaning, as instructed, in the stickys will probably solve your problem. If it does not, there are other instructions in the stickys that will tell you some other things to check and how to check them. Good Luck...sounds like something a cleaning will solve...To me!
Handis and Pardners are notorious for grease and oil residue RIGHT OUT OF THE BOX. I suggest a good cleaning for any H&R firearm that you obtain, whether new or used. Just my $.02.
Cookieman