I have seen these MGS Wammies at Gaya Rail Yard in a YouTube video by Mani Vijay Sir that he had taken from 12358 Durgiana Express during the monsoon some years back. I feel that Gaya and Lucknow should also have dedicated Electric Loco Sheds to home Wammies and Wappies (P-4s)... along with a trip shed for diesel locos from Samastipur and Jamalpur Diesel Loco Sheds as North Bihar visitors :-D