im new to the quad so imm abe askin quite a few ?s its a 1989 trx 250r when i bought the quad the guy told me he mixed the gas oil ratio to 50:1....seems a little lean to me ive ran all my 250 dirtbikes between 32-36:1 the quad has a 38mm keihn air striker carb and boyesen reeds i havent taken the carb out to see what main and pilots are in it yet also has a esr pipe and silencer on it....it still smokes quite a bit on start up but fades when it gets warmer but can still see a haze when looking back.....seems to be jetted fine when riding it the bike rips ..... can someone help me?