I just got a pietta army colt 1861 and the wedge is very difficult. Taking the screw out doesn't help. There's give in the wedge spring but the wedge will only go just past even with the barrel. After wedge is removed I have to use the loading lever to remove barrel. Here are pictures. I think the wedge spring is 'sticking' up and/or is too long for the rest of the wedge. ????