Diferent sound levels between ringtone and notifications no more possible. Any way round it?

Try Quicker or one of its relatives (if it's available in your country). The volume control tool has separate controls for ringer, notification, media, alarm, voice call, and system volumes. I've been using this for some time and love it. Easy to use, stable, straightforward, all those good things.

 

If you dont like that app, try Audio Manager.