I agree with the comments about Prop Shop, they made me some special stainless steel tubes with ball races which were/are excellent. The other advantage was at the time we lived only 20 minutes away by car from Banbury so I could call in and collect and discuss things. The biggest problem is their prices which always seem to me to be a lot more than other suppliers. Yes, I know you can't put a price on service and they do have a vast selection of types and sizes. For instance: Raboesch - £10.25. PS - £14.90 for the same size prop and if I can't get a replacement 1 from George Sitek I would need to order 4 so they all match. (£18.60 difference). I'm not a 'cheapskate' but I don't want to throw money away.
Adrian