Ok folks,
got the tube and its powersupply running again after all the rewiring mess.
Next step was to do a final adjustments on all optical parts, where i found a problem then.
Russ explains exactly this problem caused by a false laserhead design here in his video:
RDWorks Learning Lab 46 Copper Mirrors+HQ Lens=20% More Power - YouTube
I myself made a CAD drawing from the head and exported some pictures of it:
So far no real hardware change needed but i have to to adopt the adjustems to this design flaw.
best regards,
Walter