You can use a needle nose pliers to bend a guide that looks like it is cast or MIM and close to 1/8" thick at the base ? I ended up using a pair of vicegrip pliers to squeeze the loose guide "lips" on the back of the magazines until they fitted snug. Some I got a little too snug and had to open them up a bit. Then the slot at the back was too narrow to allow the latch beam spring to fit, so I filed that open again.

However, so far no progress getting it to shoot. The bedding seems awful, there is almost no contact between reciever and stock. Thinking about doing a comprehensive bedding job to it. As far as I know, one would not lose the warranty from a bedding job ?