If you think you can do it yourself you can get the different springs and change them yourself,you can check out the prices,I think the instruction disk is around $10,and the springs are about 8 bucks each.
I did mine last year and have a good 2 1/2 lb pull on my encore.
The disk also talks about the hammer resetting.The site is listed in soonershooters post.I changed the hinge pin also,If you want to see how it shot afterwards check out the pic below,Encore 209x50

http://www.hunting-pictures.com/memb...ght&encore.jpg