I have what I believe is a 1981 ez go. The numbers on the tag are 81D9. I would like to replace the clutch spring so it will idle without having to keep you foot on the gas . I also plan on bypassing the accelerator pedal switch so it just starts with the key only. My problem is I can't find a replacement clutch spring for that year. All I can find are in the 1990s. Any ideas or links for that year ? Thanks !