jorgeperez, if you take a 2 week period, you would have 6 overnights and your ex would have 8. That leaves you with 43% parenting time. If you had that friday overnight, you would have exactly 50% parenting time. I know someone who has been in your exact same situation. He ended up fighting for that extra overnight and now is a "shared residential" parent. Until that point, you will have a tough time getting the court to see it your way. That's how it is today - keep in mind that there are people working to push legislation on this topic every day in Topeka. Maybe things will change.
KTM, I think it depends on where your case is. In some courts, I can tell you that neither parent is deemed the residential parent for tax purposes in shared residency cases. In fact the order specifically states "the parents share residency." But, in the child support section, there is usually a paragraph about how taxes will be addressed. Usually the tax benefit is simply alternated annually, and the parent who will not be claiming is required to fill out and deliver to the other parent a form 8332, which states they are not claiming the child that year.