Sprocket to use?

#1
Hey guys, i recently put an upgraded air filter, new main jet, and exhaust on my 6.5hp engine on my DB30. I also bought a torque converter and strapped it on! The only thing is, with the 72 tooth (i have a 12 tooth sprocket on the TC) I pop a wheelie any time starting out, even 1/4 throttle pulls it up! I ride a lot uphill with it, and over jumps and such, so I still need good Low end, but not as much as I have now since if I go up a hill, ill fall down it! Question is, should I buy a 60 tooth sprocket to make it 1:5, a 48 to make it 1:4, or a 54 or anything else? Thanks for your input!
 
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