"(2) The guidelines provided for in subsection (1) of this section apply unless the judicial or administrative body awarding or modifying the child support award makes a written finding or specific finding on the record that the application of the guidelines would be unjust or inappropriate in a particular case as determined under the criteria specified in Section 43-19-103." quoted from http://www.mscode.com/free/statutes/43/019/0101.htm

and "(g) The particular shared parental arrangement, such as where the noncustodial parent spends a great deal of time with the children thereby reducing the financial expenditures incurred by the custodial parent, or the refusal of the noncustodial parent to become involved in the activities of the child, or giving due consideration to the custodial parent's homemaking services." quoted from http://www.mscode.com/free/statutes/43/019/0103.htm

I empathies with you. Although you must understand, this site is filled with disgruntle hateful people who enjoy nothing more than attacking legitimate posters like you. Do not be discouraged. I advise you to continue your search on this forum and several others like this. Just weed out the hate mongers. Don't even respond to them.

Now looking at the law, it seems like you have a very good chance of having your support adjusted.

The amount of time you spend with your children will matter a great deal. Also consider taking a temporary leave from your job and focuses on fighting for custody. This would put her in a bind because she would have to pay for the bulk of the legal fees.

At any rate you have a very good case for lowering your support obligation.