Just a quick question, hopefully someone can help. Decided to get the wheels of the VXT today and give them a clean. While the wheels were of I notice the collar that is fitted at the top of the coil, I assume its made from aluminum, looks to be very corroded, almost like some of the outer part of the collar has started to break away. The car recently passed an MOT so I assume it is not a real problem otherwise it would have failed. Do I need to worry about this? or fit new springs/shocks? The shocks are yellow with Bilstein written on them, not sure of type, not adjustable. Any advice would be appreciated.