Hello, I just created my first GTA V "mod", just attaching the tow truck siren to a Sabre, inspired by the Starsky and Hutch Torino. After the fourth export from Zmodeler, the siren finally worked as it should, but there were a few side effects that I cannot find any information/solutions for. 

 

First, when the siren is not on, it "wobbles around" and starts to shift away from its position. Turning it on resets its position to where it should be and keeps it there. 

Next, when the siren is turned on, the passenger side wheels disappear. Turning it off makes the wheels reappear. 

I replaced the Police Roadcruiser (policeold2) files with the modified Sabre files, and kept the vehicles meta files untouched since I just wanted to be able to drive the car around to start since this is my first mod. I have included screenshots of the issues as well as my .yft file. Thanks in advance

 

policeold2.zip

If the yft falls under the pirated content rule, mods please feel free to delete it, since I can't edit posts.