Partially Solved Uneven layers when printing dome shape

As you can see, im trying to print a dome shaped object, seems like something going on with some of the layers. Any idea what could cause this? Using Simplify3d PLA and high quality with no supports. All default settings for Robo3d

 

do you have stabilizers on your z axis smooth rods?
to me it looks like a combination of no or loose stabilizers and printing to fast.

 

What stabilizers do you all suggest? I was going to try these:

 

i use these on mine http://www.thingiverse.com/thing:278484

 

Print these rod caps: https://www.dropbox.com/s/p2qplbikfsjs1vm/rodcap.STL?dl=0

then put them on top of the Z smooth rods to snug it into the holes

 

that brings a good point, which R1 printer do you have? the 5/16 rods, the 8mm rods that don't go to the very top of the case, or the 8mm rods that go up into a divot like hole formed in the top of the case.