I've got cracked abs ring on my 172ff ph2 causing the brake peddel to kick back and juder when braking at low speeds. The local garge took a look yesterday and said they couldnt just replace the abs ring, they'd have to replace the drive shaft too as its moulded/attached. They've also recommened replacing the driver side drive shaft too as the abs ring on this side is corroded. Looking on ebay the abs rings only cost a few quid but the garage want £300 (£150 per drive shaft/abs ring)... what's the crack, are they trying to drop my pants or does a bust abs ring really mean a new drive shaft?