Adhesive Vinyl on Flatbed UV

Hoping for some advice!
We are in the process of replacing our latex printer that is on its last legs, and in the meantime moving what we can to our flatbed UV printer (Oce Arizona 1260 GT)
We have been running some adhesive vinyl that is spec'd for UV printing and having problems with ink adhesion.

Specifically -
Have a couple cut vinyl lettering jobs running on 3M - IJ35C
Everything goes swimmingly until pulling the masking off the lettering.
Any thoughts on what we may need to do differently? I'm assuming we just need to get the right leading and trailing lamp power.

Thank you in advance!!

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