Good Evening All! My 65 meriva from new, hit 157k petrol 1.4. All was well until I got home and sounded a little funny. Plugged it in and changed the crankshaft sensor after this flagged up a fault. But… Now the chain needed replacement - luckily just started nothing bent etc. Chain changed using FULL BGA parts etc and timing chain kit. Tappets changed to! Rocker gasket water pump, fan switch and thermostat. However, it runs wells but shows a cam and b switch fault? Running well with no issues. Any idea what needs doing? Head seems fine, timing is fine. Does this mean the VVT sprockets just need to be run in?