Display a selected post category on homepage on multisite setup

Hi folks,

I am hoping someone might be able to direct me re a coding question.

I have modified my theme, (purchased a while back elsewhere sadly, regretting it a little now), to display a selected category post on the home page. Started out great on the first site, but my other sites it decided to display two categories.

I schooled up on the loops and all seemed fine with the changes. I just can not get this fixed across all sites. Is there something I should know in terms of multisites here. Also, the category ID is different on the sites, could this be the problem?

If anyone can assist, I would be very great full.

Thanks!

Richard C