I haven't tried it yet. Still deciding which ROM to stick to. However one idea is to download and install the "sd card fix" from App Store.
Then using Force app2sd (again from app store)
Let me know if it works. However you would need to root your phone to use the "sd card fix". In case you need to know the sd card fix is a fix for enabling the writing of sd card on KitKat devices by other apps.
All the best
Try the Link2SD feature on this app.