i test fire a little and was fine when full, its more when the half the mag is fired it starts to be intermittent, i dont tend to fire too much in the garden, its not very big.
I just always bring backup guns, i had 3 with me today
mite be worth stretching one mag spring a bit and also try filing the BB retainer in the mouth of the feed tube(I use a half round jewelers file)a ‘wee’ bit as well to see if they feed better ? Over the years I’ve done this a good few times with cheapo mags that wern’t feeding properly . Mite work if not be only one mag fubar’ed at the worst .
I just always bring backup guns, i had 3 with me today