Are you using the jet kit HRC or JHA?.Premix or pump(you may have lost lubrication),what oil?.
On my race bike i have a similar set up but am using a 210 on the front and 200 on the rear,the rear is a bit rich so will co down a size.
Plug chops can work but not with unleaded pump gas you need avgas or race fule to get good results.
Long straights and 2 strokes do not mix very well.
Let us know what you find.