In what is being seen as a clear case of insecurity and low confidence, the performance of the chiseled hunk Karan Nath has been causing quite a concern to the blue eyed boy Neil Nitin Mukesh. All this is happening for the film ‘Tera Kya Hoga Johnny’ and Karan is pairing up with Soha Ali Khan in this. It is heard that Neil wanted some scenes of Karan to be chopped and urged the same with director Sudhir Mishra but in vain. Now, he is said to be causing a bit of hiccup which is troubling the makers.