deletion of default web app on port 80

Hi Friends,
We did a fresh farm installation for SP 2010.
We configured mysite to use some other port than 80, please note.

After default installation, we saw a default web app on port 80,
we have [b]deleted [/b] this web app &
created a new web app on same port 80 manually.

This is because the default one was using NTLM & we wanted a web app on port 80 to use kerberos.

Now, worry is --> deletion of default web app on 80 has any bad consequences?
If so, what is the way forward.....

Rgds, Minesh