yes, the TGT is a steering wheel extremely difficult to adjust. It is possible that version 3.0 was the best. Can you send me by private message your email. I can transfer you version 5.0 to test on your TGTPersonally 3.0 works much better than the 4 series, at least for the T-GT. the 4 wersion has no oversteer feel, whereas the 3.0 version is an almost perfect balance between front and rear grip. If you need any help with testing for the T-GT i'd gladly help out.
Otherwise keep the good work coming