Hey guys,
finally solved my problem with the lack of power. At first everything pointed to the fueldelivery/cloged jets. If not that the problem started after warming up the engine. So that was probably more likely to be an valve issue. Re-adjusted the valves at 0.15mm and took her for a spin. Still there was a little hesitation so i changed the points and adjusted them at 0.4mm (the gap was way bigger with the old ones) and now it runs fine!
Thanks Jim, for your quick and accurate responds, i hope it stays this way because it sure beats a modern car to drive
Roger (smiling behind the wheel)