In a message dated 98-01-17 02:45:34 EST, you write: << A scissor jack is operated by a worm gear type mechanism and usually has nice fat, flat surfaces both top and bottom. A piece of wood on top completely protects the pinblock from any gouges the jack may cause. This system is very positive and strong and I would use it over any of the methods sold by Schaff and others. >> I use this too, and it works great!!!!!!! Richard Lapo, Jr. RPT in NY
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