Wanted: Surface Grinder in Brisbane

I recently restored an old Stanley #7 jointer plane. It sits flat on a flat surface with no wobble, but I'm pretty sure that the sole is out of whack. I have to advance the blade way too far to get a shaving.

So I'm looking for someone with a surface grinder who is willing to give this thing a once-over. I don't know much about surface grinders, but I know that they make metal things flat. Willing to pay a bit or trade something.

Hope to hear from someone.

Cheers,
Luke