The OEM wires lasted for 35000 miles until they finally burned out.
So that means that airflow is not that much of a problem but still exists. I am in the process of correcting the issue.
I went with the "409" wires based on a recommendation from an RV forum. Silly me.
The warranty period was 5 years.
It took me 18 months to get to 5000 miles. Sorry but most of our trips are close to home.
And we travel about once per month.
***UPDATE***
Taylor Vertex has agreed to credit me the purchase price of the 409 wires and apply that amount to the new Ceramic Boot Wires.
They also advised that the new warranty period on all of their wires is 90 days.