Prints look bad with new Toolhead

Hey guys,
I changed my EVA Toolhead for a new Ratrig Toolhead with a Phaetus Rapido Plus 2.0 UHF Hotend and a LDO Orbiter Extruder V2.5. But since the new build I can't get any good print results out of it.
Does anybody have an idea what I could do to improve the Quality?
Thanks in Advance