No stable LL

Hello dear Omega Leidensgenossen Have a problem with my Omega again. I cleaned on my Omega oil sieve, oil pressurer, crankshaft ventilation, oil separator, throttle valves. Since then it has been running great again. Unfortunately, it had to go on assembly and so every week just 600KM on the track even faster because the Friday effect presses the accelerator even downwards. Since last week the threshing number always remains in the range when switching where I trette the clutch, also take away the threshold while gas stops and only slowly descends to 1500 rpm. (but is not constantly, sometimes it also runs completely normal ) I cleaned the LL controller now last weekend, but no improvement. If I drive in 5 gear 150 KM/h and take the gear out the speed remains at 1500 rpm until I have rolled down to 22 km/h then it goes immediately to 500 rpm So it is always without gear or uncoupled the rotation fence l only goes from 22km/h to 500 u/min. If I have taken away gas during normal driving the Monta / consumption always showed 0.0, now it shows 4,5 – 5,5 L. Today I cleaned throttle valves and LL regulators but still the same problem. Does anyone have a tip what I could still do? MfG Mario