I have allready changed to GT2 belts as i also had that in a box of parts
I also have a 30A psu so maybe change the bed... but only if i cant get 60 degree
i dont plan to print ABS, PLA only on this one... but i will test the temp thing tomorrow
have you published the MK2 onversion?
A tip... the motor holders could benefits from support on some machines :-D