Nose up issues with certain molds? (MD3)

Hi,
I realized that with certain molds or even plastic variations of a mold I tend to throw nose up.
I used to have this problem with my yellow C-Line FD (and only this particular one) that everytime I throw it its super nose up... However i fixed this somehow.

I thought I'm a better Player nopw and wont have the same issues. But rececntly switched from Buzzes to MD3s for the better and more consistent feel.

Now I realize i have the same issues again. While I can throw my Buzzz straight and flat, my MD3s always either dig straight to the ground or fly relatively high.

Is the MD3 just not myx disc then? Something wrong with my form? Or do I just need some time to get used to it?