The email address provided is correct (for reaching Clay directly).
But you might also try : (taken from the website; not sure this one is still valid)
Email the Pinball Ninja.
If you dare, you may send the Pinball Ninja an email about game repair.
But frankly it’s better to just post a reply in the blog.
But the email is PinballNinja at PinballNinja.com
He will probably request that you paypal him $20-25 for a login ID and password for his site.
The website is still up and running with nearly 900 pin repair blogs,
but it has been nearly a year (May 2017) since the last repair posting from the ninja.