Mag Feeding Problem

Working on a spare gun for this weekend for a buddy to use. It works great minus the fact that the bb's don't come out until the whole gun is turned upside down. I have tried using silicone spray to see if that would work but nothing. any suggestions. I was thinking that I was going to bring it and let one of my buddies use it anyways. I think it would be funny to let him fun around trying to shoot people but with nothing coming out.

You are an evil man.

wfhat brand of gun. are you sure it's the mag and not part of the hop up? I have some M4 mags i won't be using if that helps.

Is this a hi-cap mag or a mid-cap magazine that's not feeding?

It is a Classic Army G33E high cap.

ok, when you wind it is the mag pushing the bb's up to the top where the stopper is?

yes it does. i lubbed it and it will shoot out 1 bb and then nothing

ok, when the mag's in the magwell how much room does it have to move around? Does the gun fire better if the mag is pushed up into the well? I thinkin the mag catch may not be holding it up high enough for the hopup unit's feed tube to depress the bb stopper.