I have a Pearce +0 on my primary magazine but all I can find locally are the +1 extensions now. Should I get one of these for my spare magazine or order another +0 one? I've read that the +1 extensions have cause feeding issues and ive also read that some have no issues at all with them. My dad has them on both his G36 mags and he's never had any issues with his and he shoots it a lot he also has the stock mag spring as well. Does anyone else here use these if so what's the verdict?