*If anybody knows what sort of solvent would
work better on the Monokote trim adhesive, please chime in, cause I'm
sure the 'racing checker' patches made my glider faster!

Monokote is fuelproof so run of the mill methyl and ispropyl wont
work. That's what fuel is(methyl alc). Try Acetone and I recall
there is a TopFlite Monokote solvent that you could probably get at
towerhobbies.com.
If that does not work, let everything evaporate and no longer
flammable and gently use a heat gun and putty knife to scrape it off.
Any remaining residue can be wet sanded off.

Darren