Frist yor nipple need to be at least 7 inch long not two inches at ,two inches there are to much heat and no where to go .get you a 1/8  rod ,v shap your rod ,an put it as spacer, Tack your nipple at 3o'clock witha 3/4 long tack move to 9 o'clock an tack you nipple at 9'o'clock take yor spcea out ,an look at your nippler to make sure the spacer are the same, if one side is wider weld it frist,12 an 6 o'clock .
e-6010 up hill you will need to start your weld at 6;30 on your nippler ( never start the same place ) strike you rod about 1inch above with a long arkto build up your gases then move down to your staring point put your rod 1/16 above the root make sure you keep no more then a 5 to 8 angle on you rod.( allways look at your pipe as a clock12
at the top 6 on the bottom3 an 9 on each side .when you stop weld puse through the nipples an quick pull out to make a KEYHOLE ,all ways start with net

rod at a long ark about 1 " above your keyhole,with a long ark an move to your keyhole witha small ark  no larger then 18' off your metal.every time you start clean your weld