Arrows question

[arail1]

I'm sure this is quite simple but I can't figure it out. How do I extend the length of an arrow without the shape of the head distorting?

[cotty]

Something like this? Or what kind of arrow do you mean?

Edit: I've seen that this was a layout question after answering, so this might be off topic

[sonder]

Double click on the entity and edit using the grips. If you simply select and stretch, you are scaling the entity.

[arail1]

Thanks. That was the info I was looking for.