Question to LL owners: Site modifications

[Bunnyhop]

While I've been in the industry for years, it's been a long time since I've tried to get into the free site/LL game so I'm still trying to get caught up on all the new rules and techniques. Although I realize every LL owner has their own interpretation...since many of you who I submit to are people who frequent this board I figured this would be the best place to ask.

My question is site modifications....I'm hoping for some advice on what can and what can't be done.

First and foremost advertising....Let's say I setup a handful of free sites using a single sponsor. Now let's say after being listed I find my current advertising isn't having the pull/conversion setup I want...

Can I change the advertising at all? If so to what degree? Is a new site to advertise out of the question if it is the same genre as the original site I was advertising to? Or what if I just want to change the banners/text but keep advertising the same site? If I make these modifications should the LL owner be notified?

My other question is site reciprocals....let's say I create pages with twelve or so reciprocals on them...after a few weeks one LL I submitted to has not listed me (or I receive a rejection notice) although other LLs have approved the site. Can I remove/change the reciprocal to a new LL? Or am I stuck with keeping the rejected LL's reciprocal on my warning page having it do nothing but absorb traffic...again if this change is made should the LL owners (of approved listings) be notified?

Any and all feedback/suggestions/advice would be much appreciated...