I have reached to a conclusion regarding engine oil that API SL will never let gear shifting smooth either it is KIXX, Yamalube, SHELL or ZIC so I have decided that if I would use API SL, I will stick with Yamalube and if I require smooth gear shifting in summer, I will switch back to API SG and it is available in many good suppliers like PSO and SHELL.
KIXX engine oil is in my bike these days and it is hardly driven 300km but gear shifting is getting hard day by day and seems same pathetic as it was earlier with Yamalube.