You pose the same question for every train. These are passenger converted express with 11 SL coaches and 8GS coaches with 3 rakes. Further they run to Tier-2 towns where requirement is non AC coaches. They can't get these many number of coaches as production of SL and GS is negligible and are being adjusted from other trains and spares by adding 3AC. Delta/kakatiya, GNT KCG, GNT Rayagada and Tirupati, MTM Vskp and Bidar, Manuguru Night train wil be the last trains to get LHB may be after 2029 after all trains are LHBfied.