Ok well saltiness and mis-managedness aside, I still want to solve this damn thing! So let's get to work. Here's what we know so far:
Kohl is a trader, he flies a t9 to Cail and will arrive at 10. He was carrying "fish" (UAs?) during the "incident".
Dillon never carries cargo.
Someone who wasn't carrying cargo will arrive at Apedemak at (no time given)
The ASP is yellow.
A Cobra is due to arrive at 21:00
"Granger doesn't carry cargo - he hangs around Apedemak"
So first off, Kohl arrived and gave a clue "One of my friends always lies, the system has a single M-Class star"
He also promised a second clue in exchange for narcotics but met a tragic end. I AM GOING TO ASSUME that the CG message is what Kohl would have told us had he not died before getting his drugs. This is in no way confirmed, but it seems the most like assumption to me.
The second message was "The explorer was last seen in Pic Tok, he returns each day at 3PM GMT".
So, what happens next? Dillon is found in APEDEMAK, not Pic Tok. I don't know what ship Dillon was flying unfortunately and it's rather important that we figure that out ASaP. Dillon gave several clues.
First they mention "Granger and his stupid games" So it seems safe to assume that Granger is the leader of this little group and the one who gave the messages in the Pleiades on Saturday.
Second, "I visited a rocky planet at latitude 34 near binary pulsars"
Finally, Dillon asks to be delivered Tobacco at McMullen Vision for another clue.
Based on the fact that a) there are no pulsars modeling in E

and b) there's nobody at McMullen Vision looking for Tobacco, it's somewhat safe to assume that Dillon is the liar that Kohl was talking about. Thus the system in question has a single M-Class star, not a pair of pulsars.
So what do we need to figure out?
Where is this system in question?
What ship was Dillon flying? (If dillon is in the ASP then that mean Granger, the leader, is flying the Cobra that is set to arrive in Apedemak at 21:00"
Also, we should probably continue looking for Dillon to re-appear near McMullen Vision and ask for some tobacco.
Anyway that's all I got. Hopefully someone else hasn't done the same thing but better by the time I post this