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Author Message   Glenn Tinkerer Username: Glenn Post Number: 889 Registered: 07-2006 Rating: N/A Votes: 0 Posted on Thursday, January 13, 2011 - 05:18 am:    I seriously doubt that there will be a commonality of the major parts that are stuffed on the 24mm. However stranger things have happened, you will either have to strip the 28mm and actually experiment/compare or get hold of the relevant parts lists. The other way is to try and separate the 'fused' parts - Try an ultrasonic bath and 'strong' degreasing solvents for congealed grease or vinegar/acetic acid in the same bath for actual corrosion induced fusing. The helical is buggered as it is, so you have nothing to loose - remove all glass before using 'acid' based products