Hello ALL wise one,s finally bought a new Pcp rifle never owned one before alway,s had springer,s Being a Very much on The "Hobbit" size I got an s200 and also purchased a spare magazine. All has been well up until now. It would seem one mag does not index correctly jams up now and again also noticed a line being marked onto the magine going complete round them. I know the mag unit has an adjustment screw but before I strip rifle to adjust it (apparently it is underneath mag unit) I thought I would enquire as to wether there is another underlying problem.