Crank position sensor .. Needs 2nd replacement in 2 years . How common is this issue? also interested in your take on this issue .. 2007 std. Carrera 58k miles driven 4k miles / year. Bought it 2 years ago with 50k. Initially bought warranty. Expired. Declined a renewal at 3.5k for 30 mos. betting on engine not blowing up in next 10,000 miles . Oil changed every year or 4k . What would you do ?