Thermoquad issue

I've been running a really well dialed in 440 TQ on my 340. I have an A/F meter on it, and keep an eye on the plugs. I have nothing but ultimate praise for the TQ!!! Once I finally figured out how to set up and adjust this carb, I find it much more tuneable and easy to tweak if necessary. A/F #'s are impressively steady under all conditions.

Now, TQ preaching done, here's my issue:
Even with no choke it normally starts easily with a pump or two, but I may have an electrical problem plus the starter is failing, so I was struggling yesterday to start it. Thus some extra turning over, extra pumps etc. I pull the air cleaner and find the secondaries nearly FULL of fuel !!!!!!

What can cause this????
Is this likely dirt in needle and seats? Can that cause this?
Or a gasket issue? (Haven't had time to explore today... but when I built it I did make sure the body surfaces were flat, and the wells securely affixed.)

Anyone ever experience this???