Premix ratio

[91kdxrider]

I purchased a 91 kdx 200, bike is completly stock an runs really good, I was told by the previous owner to use 50:1 premix with spectro golden oil. I've been using Motul 800 synt. oil and find that the bike's exhaust is very thick(the smoke). I tried 40:1 last time I filled up. Can anyone tell me tell me a good ratio for the 91 kdx. Other's have told me 32:1. I'm not sure what to use? Thanks.

 

[JasonWho]

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[91kdxrider]

Ok JasonWho, I was thinking about trying 32:1, next time I empty my tank I'll try it and see how it runs.
Thanks