Use of sd-ext partition to increase available space? topic

Does anyone have a working mounts2sd/link2sd/apps2sd solution for the Moto G 2014? I have a freshly formatted good quality 16Gb card with a 3gb Ext4 partition but no matter what script or app I try I can't get additional /data space. Moving apps to SD Card in Settings>Apps is completely pointless as it moves them to the internal /sdcard, not to the external one so you get absolutely zero gain in internal space. I have used mounts2sd on several older phones before but nothing recently as I've always had 32Gb phones, but now my son has this phone and he's run out of app space already! Any help would be greatly appreciated. He's running the latest Oxygen 5.0.2 ROM with Pinkman kernel iirc.

Also as an aside, is there a kernel for his phone with working s2w/dt2w?