Yes, there will be a small amount of play in the action even with a tight fitting pin. Sounds like the locking pin isn't doing the trick for you so I would recommend a Bellm oversized pin (maybe get the 1x and 2x - I think he has free shipping for online orders just now). You might also look into the heavier springs for the locking lugs that he sells. Or just get a spring kit while you are at it. Encores can be some of the most finicky *@#@$ but getting one right can actually be fun (afterwards - if you still have money ).