I've been checking ur IMGs and they r interesting... but the reversal periods are little on the higher side.... nowadays the reversal duration has reduced drastically by having the loco ready for operations and just getting it attached to the loco guard coach and hitting the rails... so I would say that try to reduce the reversal duration to either 10mins or 15mins so that the avg speed can sort of be pulled up on a faster note and can reach a little faster....👍👍