Sizing Not Correct (holes too small, outer dia. too large)

[jtice]

I have a Prusa i3v 10" printer that I have had quite a while and have most things dialed in and working well with it...
Except, sizing.
Doesnt matter if its something I design or downloaded online.
For example, if I print something that is supposed to have a 608 bearing pressed into it, i will have to sand the hole larger for the bearing to fit.
Or, if its a design that has several 3D printed parts that will fit together, they will never fit together and require sanding and cutting.

What are the main things I should be trying in order to fix this?
Thanks

[ssayer]

You don't say what your slicer is, but I'd suppose that you need to tell it that your filament thickness is thicker than you're currently telling it (depending on your slicer, the nomenclature is different)...

[jtice]

Opps, sorry, I am using Cura 15.04.6
I found this, which has alot of info, but I dont see any of those settings in Cura at all, except flow.
http://www.thingiverse.com/thing:529...g:52946/#files