Posted November 23, 201014 yr I was wondering if someone could give me a step by step guide to changing a piston, rings and barrel on a aerox yq100 Y reg as i havnt done it before and i cant really afford someone else to do it. I had a compression test done it was reading 30psi max so i have purhased a new kit but it is a 55mm big bore kit (This was cheaper then a stanard kit). Any help would be great. Cheers
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