Technical Handling issues

[Oran41]

6foot 4 and a bit of a chub
Have a kosmic otk with rotax evo max on mojo d5 tyres
Seem to have an issue with the kart hopping mid corner tried rear track width 1400mm down to 1340 mm
Still bounces really hard any suggestions what an doing wrong

 

[LE#99]

If you have loads of front take some away and see if it loads up the back a little less maybe?