I'm attending a night course in mma pipe in 6g starting in 2 weeks but have to master vertical plate first in open vee groove.I'll be using 2.5 6013 on the root and I think 7018 on the fills and caps.funnily enough iI'm having no problem with fiils and caps but the root is catching me out.If I'm not keyholing I'm choking the arc or getting lack of penatration or slag inclusion or all of the above together.I also tied 3.2 with 3mm gap and 3 mm root face and was blowing through.Bevel and has to be 60 degrees I think.I done verticle tee fillet last year and it was easy but I'm rusty since I work with mig and tig.any tips guys?