OK, progress. Started at a rate of about 1gm /hr with the dremel on the pins. At that rate it would take a week. Changed that approach to putting the stone in my power drill and the pin in the lathe with a slow counter rotation - to keep the grinding even. Should be finished tomorrow:-) I have taken 6gm out of the pins. That will leave me with 2-3 gm to take out of the pistons.
Two Q's;
What is the best tool to lighten the pistons - I am guessing the grinding stone will clog up?
I have marked my first targets in the 2nd pic - remove the ridge on the pin boss (#1), and take a chunk out of the boss corners (#2) and then start at the base of the crown (#3) if I need more?
Thanks
Alan 
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83 SC, 82 930 (track) - Stock except for RarlyL8 race headers, RarlyL8 Zork, K27-7006, 22/28 T bars, 007 Fuel head, short 3&4 gears, NGK AFR, Greddy EBC (on the slippery slope), Wevo engine mounts, ERP rear camber adjust and mono balls, Tarret front monoball camber adjust, Elgin cams, 38mm ported heads, 964 IC. 380rwhp @ 0.8bar Apart from above, bone stock:-)
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