According to Patch Notes - 1.4.115 - 16-MAY-2017, (S)-SRM 2 heat value was reduced to 1.7 (see screenshot below or open patchnotes).
Patch Notes - 1.4.120 - 20-JUN-2017, Patch Notes - 1.4.126 - 18-JUL-2017, Patch Notes - 1.4.130 - 15-AUG-2017, Patch Notes - 1.4.131 - 19-SEP-2017, Patch Notes - 1.4.137 - 18-OCT-2017 had NO mention of (S)-SRM heat value change.
Current heat value of SRM 2 is 2(see screenshot).
Since there were no reasons to nerf SRM 2 and there was no mention about it in patch notes, this surely sound like a bug, please consider fixing it.
Edited by GweNTLeR, 21 October 2017 - 01:13 AM.