Thank you for taking the time to contact me.
The Arcade Restoration Workshop has a fairly advanced search option, so please try that before you contact me!
My time is limited so please make sure you include as much detail as you can. I will try to respond as soon as I can, but it could take some time, please keep that in mind when writing.
NOTE: I am not Bob Roberts, I only have technical information from him on my site to allow more exposure to that excellent information. If you're looking for parts, please visit his site
or one of the other many sites
that also sell parts.