Yes, the car already has the DDM backbone brace. Thanks for suggesting it, though. I'd be happy to present Rogue to GJ. Right after he shows his appreciation with a sizable deposit into my bank account. I've tried adjusting the rear clamp, to no avail. However, I did notice that it's significantly tighter than the rear clamp on my soft top. Maybe it's clamped too tightly? I'll check the front clamp fasteners, I had not thought of that. Thanks.