Saving a schematic editor after editing symbols

The resistors shown in my schematic editor are tiny. I can adjust their size to any size I want by zooming into the resistor. The problem with this though is that when I save the schematic and return to it the resistor has reduced again to its tiny size.
Can anybody tell me how to save the schematic so that I can return to it with the resistors adjusted to the size I want for the schematic? The necessary steps to be able to do this? I have tried lots of different things so far none of which have worked. Thanks.

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