If it is an attribute then try the option below

1. Select the Block and Right click ;

2. go to "block editor" or "Edit block in place"Option

3. Click OK if reference edit dialogue box appears

4. Select the upper elevation text written inside the upper space of block and justify "middle center"

5. then Select middle node point and set the text at the middle of upper space.

6. Select the Lower elevation text written inside the lower space of block and justify "middle center"

7. then Select middle node point and set the text at the middle of lower space.

8. save the edit and go back.

9. now type command "ATTSYNC" and enter

10. message in command box will be "Enter an option [?/Name/Select] <Select>:

11.choose select and enter

12. Select the block and enter.

it will be adjusted, for more accuracy, you can adjust it's style, height and most specifically the width factor 1 to 0.80

Check if it is working or not.