Waise toh I'm not a big fan of NR's Maintainence but here you're absolutely right, Katihar wastes a lot of time in the maintainence of this train usme bhi it has many issues. Time table should be reversed.
When this train was about to be inaugurated the biggest concern was priority in NCR, but yahaan toh case hi ulta pad gaya. It should be transferred to NR ASAP.