There is no way we would be able to provide you with old versions. Any versions we have are in the download area. The current downloaded code 3.01 for vb4 like your test site I made the ENGINE changes on.
You should not want to make any new servers you want to actually close your gallery upgrade your forum on your production site and leave your gallery off. You can then go through and upgrade your gallery and deal with any issues as they happen.
Like I said from a support perspective there is little I can do until you actually have an issue. Your using a non supportable version of software which should not be running on a production site and we need to handle issues as they come.