Sorry to start this again but I’m struggling to calibrate my 2012 stocks wizard with the rds type control. I have some of the manual but I cannot get it to set a kg/ rate I think it’s in seeds m2 but I’ve never had it in that so not sure how to change it. It says to alter it I have to be in cal mode 3 but unsure how to get into that bit. I cannot find the correct manual on stocks website only for newer type control boxes. Any help or if anyone has a copy of the the full manual that would be helpful thanks in advance Ben.