Hello Just Mike and welcome to the forums. I too had issues with the TT. It was a fickle little beast for me to get in the air. I made two of them just in case I did something wrong with the first one. The first one was just like what you have, stock. The second had a few mods like moving the tail servos back to make room in the fuse for other electronics and battery etc. I still had issues with it but some here swear by that plane.
Some questions for ya...
What size of motor?
What size of prop?
What size is the battery?
Do you have any video of these attempted launches?
The video thing will really go a long way to helping us diagnosing the problem. But from what you described it sound like you are having a torque roll issue. What's happening is that there isn't enough speed on the launch for the wing to take effect and stabilize the roll caused by the spinning prop. Being somewhat tail heavy can be a factor as well. I imagine this is your first plane so I am guessing you set it up as a 3 channel rudder/elevator/throttle system? The CG is an all up weight mark, meaning the battery as well. This is because everyone uses a different battery so there is no way to account for that from the mark of suggested CG. So if this is a balance issue then resetting your gear locations so your CG is a bit nose heavy with all the gear in is ideal. Other then that try to start with a little right trim in the rudder, just a few clicks right from center should be fine. This ideally should compensate for the heavy left roll. Beyond that you could look into if the wing has twist in it, could have happened while building it. If your tail feathers are square to the rest of the plane like the wing etc.
Keep us posted
