Sparky,That just may work.I covered my homebuilt and several others with Stits Polyfiber products.They were MEK based.
Stits Polyfiber products are vinyl based (MEK is one of the solvents in their products), have no relationship to dope products, and are incompatible with dope of any sort. Poly-Fiber materials cannot be mixed with nor applied either over or as a basecoat under any dope products. MEK is used as a solvent in many covering/painting systems, is relatively fast evaporating but is much slower evaporating than acetone, and has more health hazard considerations than acetone.
For all that, MEK may well work as a thinner for Aerogloss.
A few years ago Poly-Fiber offered a selection of dopes which were a good product, but discontinued their line of dopes after they bought Randolph products.