largest emulsion tube causing bogging down, how can I fix?

[sonic1]

I installed a predator 212 on a go kart project I'm working on and I got a stage one upgrade kit which includes 36 & 37 jets and a larger emulsion tube, when I installed the air filter kit it was so lean it wouldn't start so i swapped in the 36 jet and it ran good, then I swapped in the larger emulsion tube with the 36 jet and it ran but bogged down pretty bad, so I put the stock emulsion tube back in and I'm using the 37 jet and it's running good again, how can I use the larger emulsion tube with the larger jets and it not bog down? I haven't installed the timing advance key yet will that help? I'm still pretty new to small engines

 

[MB165]

have you put a open header or air filter kit on it yet?

 

[chipper]

Yes x2 ^^^ , more air and fuel in needs to breath more air out !

 

[CarPlayLB]

If it ain't broke, don't fix it!
As you do more mods you may need to change it, but if it's runnin' good now, run it!

 

[chatten63]

Try a #32 jet. Leave large etube in carb.