Very odd character placement in modded "Clueless".

Greetings, I modded this mission but was not satisfied with re-enabling the chase sedan chases, so I put Jimbo, Kearney and Dolph in their places, each with a different vehicle, plus an extra final segment with Nelson. The problem is that now at the start of the mission all of them are clustered together, floating in a driver stance in front of the Android's Dungeon, as if they were all in the same invisible car. I really cannot think of what is causing this, I did the same changings to my copy of Nachoman's FCM, minus the final segment with Nelson and it never gave me the same problem. If I change character, the same happens, if I change vehicles, the number of characters floating differs. Any help will be greatly appreciated.

EDIT: disregard what I previously wrote, I found out the glitch happens whenever a level 03 mission is being modded, in any mod, as long as there's an "AddStageVehicle" command with a driver specified, it does not happen if the stage with the added vehicle is the very first one, it probably cannot be fixed.