Go to IR official website. There you will find Vox populi, where you can give your suggestions and comments. Yes Durontos have technical stops only. For eg. HWH - YPR Duronto has technical halts at BBS, North simhachalam, BZA, RU in one direction. And the information of arrival at these technical halts is known to the IR people, since it facilitates crew change, besides cleaning, water filling.