Sounds to me like your issue is that the new nozzle now sits lower in relation to the old one. And so now your Z 0 puts the new nozzle tip below where your bed sits.
Since your not using a probe then all you'll need to do is move your end stop so it triggers at a higher position, and stops your nozzle from ramming the bed.
Move the endstop up higher and then let us know if that helps.
Sounds to me like your issue is that the new nozzle now sits lower in relation to the old one. And so now your Z 0 puts the new nozzle tip below where your bed sits.
Since your not using a probe then all you'll need to do is move your end stop so it triggers at a higher position, and stops your nozzle from ramming the bed.
Move the endstop up higher and then let us know if that helps.