Cool! So I could even reach 0.025mm layer height? Right now with the default bars I tried 0.02 and the layers were practically not visible at all, so if with this leadscrews I could reach this resolution in a much more stable way (eliminating Z woble) it could be awesome, the Hephestos is turned into an incredible printer.
I´m also thinking in changing the X and the Y axis with one leadscrew each, it may be slower, but the precision may be increased to, am I right? What fo you thing?
Cheers and thanks for your fast answer!