Stupid me...
I hadn't measured correctly and the stuffing tube was sticking out too far to allow the prop to fit inside the Kortnozzle, so I have 'dremeled' a small section out of the vertical 'rudderblade' to make it fit.
After that, off to the water for a testrun, oh joy, it rained. Well, the boat is watertight.
As anticipated, the new driveline is much smoother than stock, the only thing you can hear up close, is the whining of the ESC at low revs.
Apropos low revs; the 545 motor in combination with the Thor 15 ESC allows for very low revolutions, you can see the individual blades at the lowest setting, talking about crawling...
As it was windy, this low revs could not hold the tug in position against it, but in the hall, where I'm going to run it this afternoon, it should work nicely.
Having the prop a few mm further into the nozzle also affects the reverse steering, which is much more responsive, compared to the stock position, maybe it has to do with the prop having a tighter fit inside the nozzle.
Regards, Jan.