Do you mean these tabs will break if you extend the bolt and add spacers to kick in the top of the backrest so it's more vertical? I doubt they will if you do it right (that's what she said) but you can always take some 1/8 plate and cut it out to match the tabs. Use small fasteners to bolt it to the plastic . From all the pictures I am finding the tabs are not a snug fit in the backrest so clearance isn't an issue. If you take a picture of the seat as is. Then unbolt it and hold it in the position you want it I'm sure we can find a solution that can look factory.