Re: New Deck Spacing ?????
The idea of spacing the deck boards is to allow water to drain off the surface through the spacing also to allow room for expansion of the wood.
The "wet" new lumber will eventually dry and shrink around 1/4 inch which will provide a spacing for the water drainage .... however ... usually when laying new decking a nail spacing is commonly used to provide the intermediate spacing for draining and expansion that may take place.
It's hard to say but you might be ok with leaving them as is but if the decking expands too much and they are butted too tight .... they will buckle up.
"" an ounce of perception -- a pound of obscure "