I came to know blog entry of IRi that 12628 and 12627 has now loco change at MMR and MLY TWIN bring it to and from , since th arrival and dep of up and down KK is only 20 mintes , same loco may not be used. so which loco brings train it to back to sbc , or do ralway keep 24 hours at MMR , please inform, more over halt of 5 mintes in time table is not coorect min time for loco change is 12- 15 mintes