WOW! Someone answered the question that was asked. Good job Deandome. helipilot225, if your Titan isn't popn' wheelies like you want the slipper clutch may be to loose and is your most likely culprit. If acceleration is also sluggish you may wanna check your clutch shoes, springs and carb settings too. I hope this helps answer your question.
ORIGINAL: Deandome
Here's a response to a Twin Titan post you thought you'd never see...
REMINDS ME OF A PROBLEM WITH MY MINI-T
I have a mod motor , cvds, new tires, and I was surprised it wouldn't wheelie. Turns out the SLIPPER CLUTCH was waaay loose!! Tightened it up, problem solved.
So check the SC on your TT!!! If that's not it, well I got bupkus else to suggest!
Dean