Appologies

Sorry to hear about your back Fishy.

Most people are pretty understanding about stuff like this, but for those who aren't or can't wait for parts etc, you might consider refunding any payment. If a few months down the road after your surgery if you're up to it and they still need the parts, you can come to an arrangement. Just a thought.

Take it easy, you're back is definitely something you don't want to rush.