Scripting is peanuts. I also made a script with q working and mousewheel and different viewmodels en crosshairs. I dont know exactly. But you are using nested quotation marks and thats always problematic. I dont know if your script is working correctly. But maybe it will not execute multiple commands. You can then try to make a seperate alias for the multiple commands and bind your key to that alias.

In your initial bind you are calling position1_mwheel, while there you are calling position3_mwheel and there you are calling position2_mwheel who is calling position2_mwheel. And thats looping. I dont really understand the script, but looking at your script you probably misplaced a quotation mark.