Hello all...recently posted that Classic Firearms had some Inglis HP OEM mags...ordered a couple, decent shape...they are marked RA which I come to find were made in India as the supplier for the HPs... I'm pretty familiar with removing the base plate on other HP or similar mags..push in on the baseplate retaining plug (or whatever its called" slide the plate off, remove spring / follower etc... I can not for the life of me get the plate off these. what appears to be the part that you would push in, doesn't budge. the small lip part that overhangs appears to give a bit but thats it... anyone have any experience, recommendations on cleaning these RA marked magazines?