I've found getting the pulls set to 3.5#'s on the front & 4.5#'s on the rear to be about ideal for most any use. Sounds like the rear trigger is def. too heavy. I've had double guns that simply got bad because the vehicle used in the lubricant dried out and they got gummed up, bought one at another time that was non-functional for the same reason. WD-40 has been known to also become a type of 'glue', if the arm is left unattended long enough. Where I'm going w/all of this is: send the gun to a good smith for a strip & clean and have him set the pulls as mentioned above w/no creep, assuming you like the way it fits you now. You'll then probably get a lot more enjoyment from it.
