Marlin box magazine disassembly

[abalas]

Would anyone know how to disassemble Marlin box magazine? All 3 that I have have feeding issues with rounds sitting to low to chamber correctly. I have to push the mag from below to make the mag sit higher and chamber the round. I know that this issue can be fixed by adjusting leg angles of the read metal feeder but I need to be able to take the mag apart first. I don't want to ruin the magazine by doing this incorrectly or forcing things to come apart. Is there an easy way to do this?
Thanks.

 

[abalas]

I got it. The bottom mag plate slides out with a bit of force using a punch and pliers. I bent the legs on the feeder making the top to protrude slightly higher. I bent the spring to fit the new shape and voila! this makes the round to look up a bit higher and now the rounds slide easily straight into the chamber, every single one of them. My 3 mags are now perfect. Now I can buy few more mags as I know how to adjust them. I love my Marlin 917 VTS.