Any 172/Cup owners found theyre car lumpy at about 6/7K miles? I reckon I need an oil change - the service light comes on randomly and the words OIL flash on the dasdh in the mornings but the oil symbol light is never on? Also I changed the front and rear tyres over at the weekend and the car is handling like a crock of sh*t now and the steering is unlevel - surely I dont need to realign the wheels if you change over the fronts and backs? I never got the back ones rebalanced from when they were on the front, but I balanced the new front ones obviously - the guy said you wouldnt feel the rears if they were unbalanced? Any thoughts