[Force 12 Talk] question C4E and 40m element

[AB2E Darrell]

Hello,
Not sure if this list is still active.

I have an unassembled C4E. 
My question is, in the manual (it shows 4 versions of this antenna, C4 and C4E and 2 others) the C4E has a single feedline and has the 40m dipole element. Two versions of the C4 have dual feedlines, and is labelled C3 Core and "EF140S to complete C4".
I'm hoping to leave off the 40m dipole element and just use it as a C3, and mount a HyGain Discoverer 3 (3el 40m) yagi below it.
>From what I'm seeing in the manual there should not be an impact on the antenna is used only as a C3?

Has anyone done this?

Any feedback appreciated,
73 Darrell AB2E