I am a subcontractor on a commercial project in CA . The company who hired me has a paid when paid contract or net30-45. It has taken sometimes over 60 days past invoices to get paid. Im trying to protect the reminder of my work with a preliminary 20 now as i have finished 2 stores and almost completed a 3rd store with about 15 outstanding invoices in the amount to $43,00.00
You might want to look into stopping work under the terms of your subcontract to see if they will pay. If you finish the project with that much owing then the GC may try to force you to sue for it.