I do so empathise - my HQ Sweet Sixteen Sit Down developed a timing issue yesterday, and now it has to go on holiday to the UK to be fixed (no dealer here). They were very fair with me, it's under guarantee, so I'll get it fixed, and they are going to give me a free service, and I will pay for one way shipping.
But no, I can't go and get a back up for Sweetie, so I will have to wait it out - I'm going to tidy up a bit and start a lap quilt to take my mind off the wait.