Mini MX question

Hey guys, im new here. I just got myself one of those Mini MX dirt bikes from USA-Pocket-bikes.com and fell in love with the whole mini bike scene. Loads of fun.

When i got it, i tuned the brakes, pumped the tires up, got a bigger fuel filter and cleaned the gas tank. After riding it for a couple hours, i took off the muffler, wrapped the exhaust in header wrap, got another spark plug and gapped it at .028 because i heard to gap it at 25 and 30 so i did the middle. Also i strapped on my Navi from my car so i can see how fast it goes.

Now, keep in mind, im 230lbs and 5.11. I have gotten it to 31mph on a long straight. I gotta lose some weight most deff if i want to go faster. Take offs are terrible but thats cause im huge. Is there a way i can get a better clutch or what mods do i need to give it that extra oomf im looking for? sprocket maybe?

Pretty much all cag parts fit they don't make them just for the dirt bike.

Today, i installed a DIY boost tube made out of a giant permanent marker and tuned my carb. The results were amazing. I would of never expected the bike to pull like it does now. It deff gained torque. Its really fun and peppy. Cant wait to do more mods. I cant believe people dont think the Boost tube works.

I don't think it works. I think you got those results because you tuned your carb.

I got the results instantly. I tuned the carb because the idle went up after the fact and it made it even smoother.

what mini dirt bike do you think is the best?
and is usa-pocket-bikes.com good?