Enemy of my Enemy. REALLY Need some help.

By RebelDave, in Star Wars: Edge of the Empire RPG

SPOILER ALERT. If you are planning on playing this adventure, STOP READING.

I have some issues and I need help in changing a few bits.

Specifically, the recipent of the spice at the end of Act 2.

The adventure states that the handoff in the cave is from Muuro to Imperial Stormtroopers in exchange for a Gundark.

But when the PCs call in Marek for help, he arrives with more Troopers.

Now, I understand that Marek has ostensibly set up the PCs to get the spice to its destination, so they may track it in the hopes of catching Stim. Fine.

But surely, if he knows about the Stim project, and the Imperials are there to get the spice, for that project... he must clearly already know where its going to be, and that Stim (without any help from the players), is already going to be there, as if the players are not involved (someone else smuggled it there), Stims going to be there.... so huh?

It just doesnt sit well with me...

So... who or what can I change the ultimate handoff to, without making it seem like Desu Ex Machina? Who, at the same time, are not Imperials...

Help me Forum goers! You're my only hope!

In this scene we can say that Marek is really trying to keep his cover as a sector ranger until the last moment.

This scene is really about the reveal, where we learn that Marek is the true villain.