I picked up an Encore frame in a trade and then bought a stock set without the screws. What are the specs on the stock screw and the forend screws?
Don't forget the washers too.
Forend screws are 10/32 and I think half inch length or a bit more.
Encore Classifieds has that information.
Encore screws are 8-40 and different forends may require different length screws. The standard forend uses different lengths than the Prohunter model for example. Do a Google search for the stock set you have. 8-40's are hard to find in local stores. Probably have to order them from a gun parts supply store.
Stratton custom guns has excellent hex head screws and washers for Encore forearms.