I am going to praise the maintenance of SK and pnbe rajdhani. The lhb coaches of these trains r so curiously maintained that I haven't seen any coach of these trains either old or dirty .. Seen lko shatabdi , kanpur shatabdi, Howrah rajdhani and Mumbai rajdhani. They were not so well maintained. Pls don't take against of any train as train bashing. I have said what I have seen. If any one have problem pls come and seen the coaches of these trains at ndls.