I'm sure there's other articles out there, but here's the first one I could find on how to install/setup swaybars on a TRF car. It's from a 417, but the approach isn't significantly different:
https://tchub.wordpress.com/2012/07/...-build-part-5/
Paying attention to the little details is important. For example, making sure the grub screws are not too tight, but not too loose. If you're still having trouble, find an experienced hand at your local club to check it out.
Phil.