Hi Allen Thank you so much for the long and instructive post. It sounds like a fair bit of work on DH's part. I think he has enough to contend with with house renovations right now. Everything is taking twice as long as planned. I have printed out the instructions and will keep them. Perhaps next year he can get around to it. No pig roast using and oil drum for us this year. I feel bad that you spent so much time writing up these instructions, but hopefully others will benefit from them too. My sympathies to you. Have spent 1/2 hour on a cold table taking X-rays and just couldn't imagine what 3-1/2 hours must have been like. I sure hope the results are positive Allen. Good luck. Thanks again. Penny in Halifax, N.S.