When I was on the phone with Britax today, I mentioned to them that their Parkway SGL is not compatible with my vehicle because it won't let the shoulder belt retract. I was just providing feedback in hopes they actually care about customer feedback. Then, the CS rep told me that I could use it without the belt guide. Is there any truth to that? She said it's even in the manual, but all I find is the opposite, instructions on using the belt guide and it listed over and over on the checklists to make sure you've remembered to do everything.