LMAO!!  Yes, Jon's tip-toeing is certainly a better approach than telling him he's full of it. Never worked for me. It won't work for you.

You may find with 70S-2 an oxide build up with mulitple passes that manifests itself as tiny pepper looking spots when you grind below the surface of your 2nd, 3rd, etc passes. These are oxides of Ti/Zr/Al that are the triple deox of S-2. It generally is not recommended for multiple passes although lots of people, myself included, have used it for tons and tons of 2 pass applications, root and hot. Even with 2 passes you can still see the build up occasionally. With three and four it will become more pronounce.
Having said that, S-2 will lend itself to achieving greater root penetration out of position (overhead) than other classifications due to the viscosity of the puddle(predominantly reduced Si). You can also crowd the puddle a little with a reduced gap and push the root in, or open the gap up and actually feed the wire through the gap so that the metal falls from the ID side, although this requires greater skill.
You can also reduce the angle on your torch and increase your gas flow. All these things together should produce a noticable difference. Though as stated, it isn't necessary, and often even undesirable.
You can also grind your roots very thin, even mechanically pushing them in some with a grinder, and then pushing more with your hot pass.

you have to feed your rod from the inside of the pipe, let the wire melt down into the backside of the puddle, at least on the bottom, you do. I generally use a 5/32 gap and a 3/32 wire for the root so I can get the wire inside the pipe.

If you weld too hot, it'll flatten out on you.

On bigger pipe go with a slightly larger gap and a 1/8 wire.