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...plus I had a thick.
Thats it the loco is going away for a few monthe whilst I build the dake
............................ got talking to some of the wise old guys, "you have made the bushes excentric havn't you and made everything a lose fit":- "no i've made everything a good fit and concentric":- "well thats were you've gone wrong you should make the two outside bushes excentric and a lose fit crank pin, you then rotate the bushes in the rods until you get the sweet spot wher the loco turn over mark their position and fix them with some loctite retainer.