So im going to be getting my gears installed this friday and the guy tells me that sometimes the ABS sensors in the rear are very fragile and if theres rust on them they have to brake them and take them out in order to do the gears. And of course i would be charged for them if thats the case. does this sound normal to you guys? It is a reputable shop from what ive heard...but it seems after talking to him the price is adding up. He says totall for gear installation should be around 600 bucks but the sensors are 75 a piece?