Need help: Should the tuning be changed or fingering altered?

Hi,

I created a CDLC (Bass only) in E tuning. However, I realized toward the end that I needed a lower D on the 4th string. So I retuned to Drop D but now, I find it's very hard to play.

Should the whole thing be retuned in D? Or can the fingering be altered to make it ewasier?

If you want to test it, it's here:

https://www.dropbox.com/s/59qpy0l7i3yfb8h/Mizik-Mizik_Ayizan_v5_p.psarc?dl=0

be warned, though, that it has a lot of problems since I'n still at the beginning stages. For example, I can't do unfretted slides in TuxGuitar and before I make note-per-note changes in EOF, I want to make sure my tablature won't change. So many slides are incorrect.

But I'm more interested in knowing if I need to tune the whole thing to D (ugh!) or not.

Thanks,

L