Posted September 2, 201212 yr I have a DT1F-36948 with matching engine and frame. Has 21" front wheel. This number does not come up in my research. Does anyone know if this is a 1971 or 72? Is it high compresion? MX? Also the piston is marked 7050, I assume that's .50 mm over standard 70mm bore. My question is how many over is this? Is this a 1st over, 2nd .....what incriments are the overbores? And finally any idea where I can get a piston ring for this. (it is a single ring piston). Thanks for taking time to reply....This is my first post. greg
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