Just bought myself a DT 250 but need a lot of work doing to it, i have no paperwork so dont know what year it is . Which is allways handy to know when ordering replacement parts. The engine & frame No are matching *512-001368 .The 3 and 8 are a bit confusing as they both look identical and not a definite id .I think the 512 denotes a 76 machine but if someone can confirm for me ,i would be very thankfull.