probably i found the reason i have ,made the Testload with 4 Diode 1N5404 / 3A 400V versus the needed 1N4004 1A / 400V it was prescribed by the 100$ 2.8 Watt Laser PDF
now on your link i found the prescription to use the 4004 Diodes so i will make a new Testload to see if my Current settings was to low..