More amps and less voltage will close up your arc length some. Similar results can be achieved by reducing your contact tube to work distance. The SS FCAW wires I have experience with are limited to 308 and 316 so I may not be much help.
I have always had to manipulate the wire side to side some to flatten the bead out. As with most processes pausing on the sides and fast across the middle will flatten things out. Just not so fast you leave the puddle. I usually like the parameters to be in a range where the arc is short and there is no spatter loss across the arc.
Base metal thickness and temp before welding can also affect how well it runs in positions other than flat.
Check the ranges of parameters as mentioned before and then tweak within that range to get better control of the arc and puddle. If its throwing spatter something probably is not right.
Have a good day
Gerald Austin
weldingclassroom.org
http://weldingclassroom.wordpress.com/
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