Cool! I'd love to know if it's a risk. Of course, your law vs ours, it may be different too. I know a few of the basics: You can't limit your liability. Negligence is un-insurable. You can't sell something you know is unsafe... (which doesn't stop a lot of people OR businesses around here. Some of the unsafe machines I've seen with nothing stating that they should be checked out by an electrician, etc are unreal.)
Then the burden of proof would be on <whom> to prove it was or wasn't my work or was someone else's that did it? <- this is the big one for me.