As a small complement to all that has been done here:
I have started working on these a while ago, and while the Kashtan has improved a lot recently, I noticed that the current versions of the Palma/Palash were still lagging behind.
Since I have harmonized the complete series, I post that here in case it might be useful to someone:
Obviously the Pantsir is provisional, as I worked from the available renderings and applied a measure of common-sense guesswork to adapt it to the existing versions.
If the different versions and their history are unclear (as well they may be), I can only recommend the two posts by user Triode in this C-MANO forum thread