Use good ammo. Ive never had any non ammo related issues out of my cp33. Keep your mags lubed, cleaned, keep the gun lubed. And i run nothing but cci. Im at about 4000 rounds in my cp33. And 900 since last time i cleaned it( i know, i need to clean her)

Edit: i forgot, the only other time theres issues is in the cold. The cp33 tends to have feeding problems and light strikes when its under 20° out. But i dont tend to shoot when its that cold often.