Ah yes John, but you are close to the famous string mines at Tamworth. >I have been known to use string to compress one ring at a time to and push >the piston into place. Slow but effective. Regards to all, John Blimey Terry, are those string mines anywhere close to those Chromium bushes you told us about??? John must have three hands because I haven't figured out howelse he can squeeze the ring together and still push the piston down. I would opt for the Jubilee hose clamps, but that must be an Aussie word since that species don't seem to grow in the Northern Hemi-flat. NECK better known as Unka Jesse MODEL ENGINEERING DISCUSSION LIST. To UNSUBSCRIBE from this list, send a blank email to, modeleng-request@xxxxxxxxxxxxx with the word "unsubscribe" in the subject line.