Cashier: no such token in Stripe

Ok I've checked and double checked and triple checked my public and secret keys and they are correct. But I'm consistently getting the no such token error back from Stripe.

I'm using the jquery.payment plugin which has always worked before, and still works fine on Cashier 5, but not on Cashier 7.

I haven't found anything by Googling that references anything for this error except bad key pairs.

How can I see the what's getting posted to Stripe by Cashier when trying to swap out a subscription or create a new one?

It seems that perhaps Cashier may be altering the keys or getting one from somewhere else.

Nothing else makes sense at this point.

Any help greatly appreciated.