If you want to travel from any station between PIL/Piler and DMM/Dharmavaram to SC/Secunderabad on this train, when there is no availability in PQWL quota, try to book from PAK/Pakala to SC/Secunderabad and change the boarding point to your station, before trying to book in Tatkal quota, as most of the times there will be availability in this quota and it is cheaper than Tatkal ticket from your station.