AutoCAD MEP

[#1]

I am attempting to create custom blocks for the rise/drop of my SA, RA and EA ducts.  On the attached image you wil lsee the EA (purple) is exactly as I need it to appear.  However, when I do SA (blue) or RA (brownish), the hidden "drop" is all funky.

I have looked in my style manager, display manager, the individual blocks, etc. and cannot find the difference or error.  Someone PLEASE help!!  Thanks.

PS- Could someone also help me understand why this little drawing is such a large file?

PSS- On the EA duct elbow, I did us the Display override to make it appear as it is, but i need to know how to make that occure on all the systems, BUT without changing the rectangular rise/drop settings that are currently working perfectly.

[#2]

Okay, I was able to figure out the issue.

I cannot really explain the details, but it had to do with the block in the Styles drawing and conflict with the same block that was in the template file all new drawings are created with.  So, I simply cleaned the files, recreated the block where I wanted it and it now works exactly as it should.