Hi everyone , it's been awhile but I'm back at it. My little dt125 could use a little something extra, if anyone knows any helpful mods please share. Thanks 

Welcome back. The best mod i can think of it swap the top end for a 175.
You wont be disappointed--so long as your exhaust isn't in need of a burn out.
I did that to my older 125 & never looked back.
Well--if i 'did' look back everyone was behind me trying to keep up lol.

Will the stock carb work ok if I reject or would a 28mm help ? Thanks 
 

See what the guys are doing in South America, Brazil, Columbia, they race a lot of the DT125R's, they go like stink!

This guy's channel has info on tuning small capacity 2T bikes !

Thanks. Sure wish I knew what he was saying because he definitely has some tricks.