I received my MX75D a couple of weeks ago. It was ordered as inventory after the HK Gov announced it would be limiting the scope of the first registration tax exemption. Upon delivery, to my dismay, I discovered what appears to be rust marks along the base of the middle row seat when you lift up the Isofix latch. I reported the problem inmediately upon delivery. Has anyone checked the bar beneath the Isofix and if so do you see brown rust like markings?