I've got 2 IceCap T5 reflectors. Being new to lighting of this type and being over zealous to install my new reflectors, I neglected to remove the protective plastic coating from the reflectors. I know, I'm retarded. Anyway, now that a good month or more has passed, I'm trying to remove the plastic, but only parts of it will come off.

I know I can't burn the plastic and glue away and WD-40 was no help. What else is likely to remove the backed on glue/plastic? TIA!