For many states there are only allowed 3 attempts for a single problem, after that you are allowed to exercise the lemon law and have that the manufacturer or their representative either fix the issue (1 attempt) or replace/refund the vehicle.
For Virginia it looks like the lemon period is 18 months, so you may be SOL in that regard.
Read this in full and see if there are any options for you, otherwise continue to persue NCA.
Virginia Lemon Law Statutes