Answered Tall prints (2in+) failing? HELP

So recently I have been printing things that are slightly larger then 2in and each time I print it seems to always mess up and either glob up or not print all the way once you get to the very top of the print. The only variables I have changed are from printing in normal stock settings with "medium" quality to recently a custom setting made known as "vase" mode so you get that nice even look as well as make the object hollow (which I'm not sure how to do any other way?) so I'm not really sure where something is going wrong here exactly and would appreciate some tips or strategies on how to fix the issue. Would an "oiler" and top affixed spool holder help as well? I will post pictures of the failed prints as well as settings used for reference.


FYI: I have not used support material yet for any of my prints but most of them don't require it as of yet on my smaller prints. Perhaps this may be an issue as well? Just strange how everything prints beautifully till you get to the top of the print then screws up.

------------Settings used------------
Printer head temp:210c
Heated bed temp:50c

Layer/surface:
Layer height- 0.1mm
First layer height- 0.4mm
Outer surface- 2 (count/mm)
Outer surface TOP- 1mm
Outer surface BTM- 1mm

Infill:
Fill density- 0%
Starting angle- 45
Infill overlap- 0.06mm

Speed:
Infill- 60mm/s
Top solid Infill- 50mm/s
Raft- 100%mm/s
Perimeters speed inside- 60mm/s
Perimeters speed outside- 50mm/s
Supports material- 60mm/s
Bridges- 60mm/s
Nonprint moves travel- 150mm/s
First layer speed modifier- 30%

 

How do you slow down the print and add more cooling? Is that the reason it glob's up on the one on the right? And for the left print the skull would these settings changes help with the hole on the top as well?

 

ok so looking at the link and opening MatterControl i did find the section on where cooling is. Its under "Filament" and is currently set to 10 seconds "slow down if print speed is under" and 10mm for "minimum print speed". Should I try changing it to 40 seconds to help not have that blob of filament at the top of my tall prints? Its still very strange tho that it only happens to my prints taller than 2in and doesn't seems to effect anything lower than that even if the print is super detailed crazy!

 

So should I mess around with the angle of the print? I liked using the vase mode because it gives the prints a more solid once piece look vs the standard 3d printing look of lines over lines or layers over layers. But good to know to hollow out a model just choose the 0% infill option! Im super new to all this 3d printing stuff as its only my maybe 4th print so far so its a very interesting learning curve thus far and when something goes wrong there are what feels like a million variables that could have caused it lol