After setting Print parameters zcode does not show correct design

Once I bring up the stl file in Z-Suite and then I click on Print button and set the parameters and it goes though the process once complete and I save the file to zcode and then try to open it in Z-suite the design doesn't look anything like it did before.  Why does this happen and it happens quite often. 

Any assistance with understanding why this happens would be appreciated as I cannot print my design due to this issue.

It might be a little too small.  Try increasing the size or provide the STL so someone can check it for you.

What do you mean too small?  Can I just increase the size using Z-Suite or do I need to use the program it was designed in?

Each of the image files are separate designs.

I think you overestimate what’s possible with an FDM machine.

Your designs are really pushing the limits with these very fine lines.

I think you overestimate what's possible with an FDM machine.

Your designs are really pushing the limits with these very fine lines.

Yeah, that is what I meant by it being small.. The 'tubes' look really thin.