When I turn the idle mixture leaner about 1/4 turn the current slowly drops from about -4 mA to full rich +12.5 mA. The current at cruise speed is now about -7...-10 mA and always -10 mA at WOT. I cant keep the current around 0 mA at any speed. There is still no full load enrichment current. Could the lambda sensor or the full load sensor be inactive or faulty?

tomant