Done! Problem was with valves one valve edge was broken, valves are replaced with new ones,kharadya guys work with valves adjustment.i also changed cylinder with ring pistons,gasket & plug,engine oil, filter.Bike is alive again running smoothly. I will upload some pics of valves etc.New head by Honda costs Rs 5000 but there was no need to replace as problem was with valves in the head which got repaired replaced by kharadya in Rs 800.