RE: Should I freak out!!??
oh no, 10 grains wont make a difference, unless the spine is already off, then it could compound the problem...If your on now, 10 grains wont throw you off.
EDIT: keep in mind, im still learning all this stuff too. I am not the person to ask about this for an official answer. I have been living on Ontarget2 lately though, and am beginning to get the feel for spine adjustments. It has actually helped my accuracy, simply by tweaking my arrows and DW to get optimal spine.