When I give my KR some beans following its obligatory 5 mins warm up ( to avoid cold seize) it lays down two straight lines of blue smoke for about 50 yards. Childish I know but I love it!
After that it runs clean on Castrol power 1. Is the GT burning too much two stroke or is it starting to devour its gearbox oil. Its not a good policy to run too much 2 stroke as indirectly this causes the engine to run lean and risk holy piston!