I think maybe a post was deleted somewhere that I never saw, because I'm having trouble following the conversation...
Anyway, the "size" of the annotations are controlled in 2 different places, based on what type of "element" they are.
The size of the "symbols" that you see for fittings is controlled by a setting in Mechanical Settings -> Pipe Settings called Pipe Fitting Annotation Size.
The size of Rise / Drop symbols is controlled by value in Mechanical Settings -> Pipe Settings -> Rise Drop called Pipe Rise / Drop Annotation Size.
The smaller you make these settings the smaller the fittings will be scaled (based on the view scale, of course). The value that you are entering in both of these is (conceptually) the "final" plotted size.