Well, I've fitted pistons that you can't see the mark on to any old barrel c/w the old clip and base gasket, but even I wouldn't advocate such actions if you've got other options.
I'm sure Matt or Andy will have the sizes lying around somewhere and I'll bet a bottle of Sangsom a "no mark" piston is the smallest.
"We can go when the bottle is empty.....no.....this bottle!"
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Please do not PM me technical questions, if you can't find it on the Forum start a thread
Last edited by fontyyy on Tue Mar 25, 2008 3:19 pm; edited 1 time in total