Thank you all for your contributions. I've had an idea from reading your thoughts. For an insert, I used a (straightened out) wire coat hanger. It's perfect and also the right length once I straightened with pliers and cut away the 'twisty' bits. Am still looking for something to use as tubing but I do have one or two ideas. I guess the whole point of all this and indeed the best ideas are those where an everyday item can be adapted for use accordingly. It just needs a little imagination with a touch of perception. It seems that throwing money at it is in some ways - a failure. Anyway, thank you again all for your help. Regards, SDD