The problem is... that I don't know enough about a Jog's carb to give a good answer...
Is it a Mikuni?
Is it a slide type?
Does it use the standard (larger style) jets?
If the answer to all those questions is "Yes"... then I could more than likely get it to run good (especially if it had a tuned pipe to go with the bigger carb) ... IF!... I had the ped in my hands.
Trying to describe what to do to someone else is a lot harder.
One thing you need to do Heath... Is to do 2 plug chops... One at its current top speed(23mph?).. and one at say..17mph... then compare them and tell me what they look like.
And are you running an air filter?
What ever you are doing with the air filter... do the opposite.. and describe what happens when you add it or remove it.
One of the things you will discover is that... modifying is work.