My car was built in 2005 and also has the blue springs (but not as clean as yours). I’ve always suspected my front end was a bit on the hard side. You can barely move it by pushing down at the front. A couple of months back Peter B got underneath with his tape measure and concluded my lowers had about 20mm of compression

I think he said it was comparable to the stiffness of an F1 car! So I’m eagerly awaiting my kingpins to developed slack so I get in there and play.