Hey Dan,
We are still a Mac parts supplier and are not wanting to get out of it! But yes, we don’t focus on older models like this as much anymore. We push to Amazon since there are usually multiple options available albeit it can be more frustrating than dedicated parts suppliers like you brought up. I imagine that even the folks who focus on just Mac parts can be spotty with inventory on older things too though. We’d love to be able to have more specific sources to point people to but the oversight and management of that isn’t something we can handle right now. It’s a lot of work to micromanage that many links. This is something we’d love to work towards doing in the future but we’re not there yet.