nice guide m8. just what the doctor ordered. can i also be cheeky and add to it though?
i found that my G&P mids had TWO springs in them joined by a plastic piece in the middle. this made them alot stronger. however one did have feeding probs.
what i did was what you have described here, i added 10 bb's to the base of the mag. additionally i also put the spring in a box and sprayed it with silicon spray then re-loaded the mag. its fed flawlessley ever since.
my mids are quite new which is what i think accounts for the double spring setup, so when removing your spring please che