Remember the yamaha asi 125cc fondly,was my second bike purchased in 1970 from Kingstons in Nottingham UK. I paid £197.00 new, reg plate WTO68J (about £220 on the road price) I too recall having to carry extra plugs around fitting hotter plugs helped,in the end i just thrashed balls off it..i still remember the howling two stroke exhaust note,and clouds of blue smoke as i blasted down the road at 65mph. No Kodaks about then.If anybody has any photos available email above...cheers dave