When dealing with excess film causing fingers, follow these steps:
Begin by hitting the affected area with tack solution to start off.
Split the fingers into smaller, manageable sections to spread the load on the film.
Spray tack solution and work on the fingers slowly to improve manageability over time.
Running the squeegee over the edge of the panel may help lock the fingers in place.
If a crease appears, lift the film, spray more tack solution or slip solution, then squeegee again carefully to avoid creasing.
Be patient, take your time, and avoid overworking the film to prevent fingers from reappearing.
Break down the fingers little by little, waiting 10-15 minutes between attempts for a more manageable size.
Conclude with a final spray of tack solution, allow the fingers to dry, and they should squeegee down easily later.