Sizing symbols and tolerances

[Jaycee.foli]

Looking to understand how to size symbols and how to work with tolerances. In the snapshot I am attaching I have two areas of quandary I'd like input on. The first being the massive difference in size between the drop/rise symbols, and the plan view connections shown. In my experience the plan view connection on paper and the diameter of the drop/rise symbol are usually comparable on paper. I have not been able to sort out how to make these size similar. 

For my second question. A piper her is working with a lot of slopes and having a hard time getting many of the vertical drops and risers perfect. Some of the drop/rise symbols appear to be not showing due to slight offsets. Can the tolerance for this be adjusted?

Any links to videos or tutorials on this are greatly appreciated.

[Jaycee.foli]

I've just noticed these huge size differences.

 

[fabiosato]

Hello,

If Use Annot. Scale for Single Line Fittings is checked, the new fittings' sizes will be controlled by the value in Pipe Fitting Annotation Size.

- To change the fitting annotation size, select the fitting and change Use Annotation Scale