Itty Bitty Double FLEX Extruder

[clough42]

I am printing the AMF version and my extruders are within a hundredth of a millimeter, and I think that's acceptable. But I am also getting a hump in the middle of the part that isn't so good. the hump in nearly 2x the rest of the part. I wasn't concerned until I noticed it in other prints. My gcode prints the perimeters first and then the infill which is a single line. there is less gap than the bead it is trying to put down and it ends up on top of the perimiters, or atleast that's my current theory. am I flowing too much plastic. are my slic3r setting wrong?
IMG_6647.jpgIMG_6643.jpg

Huh. I haven't ever seen anything like that. It's kind of hard fromn the photos to tell exactly what's happening. Usually, you don't see the plastic pile up above the nozzle height like that. It usually gets squished down and comes out the sides. For it to pile up above the other layers, usually the nozzle has to move up.

[svmagnum]

I have 12" Makerbot I3V with Rumba board and graphical display.
Does anyone have same combination and can share their firmware for the itty double extruder?
I am noob when it comes to modifying the software so need your help please.