Can anybody help please? I am trying to set up my '47 Rover 12. I have fitted a new Solex Carb and refurbished the mechanical fuel pump. I have tightened all the linkage in the distributor to remove any free play and have set the static timing to 11 deg BTC. It starts remarkably well and idles well. Low speed power seems quite good and will get to 40 mph sufficiently quickly - on the level. However, on hills it runs out of power and the speed drops dramatically to. It feels like the ignition needs retarding. I rechecked the timing dynamically and with the engine idling (around 650 rpm) the timing is showing around 26 deg BTC. Reving the engine advances it more. This seems excessive, as if the distributor has the wrong advance springs. Does anybody know how to check if the springs are correct, or what the correct springs (spring rates) are? Also it has two different springs fitted, presumably to give a 2-stage advance curve, but this seems a little advanced for a car that age. Can anybody help with advice please as to how check the CF advance is behaving correctly?