I never did trim my WB, didn't really need to. However, as far as tuning I meant by tuning your bow so that your arrows fly straight without wobble, fishtailing, or porpoising. If you haven't done so I suggest downloading Easton's Tuning Guide from here: http://www.eastonarchery.com/downloa...ning_guide.zip. Read it thoroughly. If you tune your bow with the procedures used there you'll be shooting your broadheads right with your field tips, which is a real plus! Your groups will be much smaller as well. Those procedures should be used with whatever rest you decide to use. I personally don't rely too much on paper tuning anymore simply because once I get my BH's to fly with my field tips out to about 60yds the bullet hole is still a bullet hole! Eastons guide covers it all let me tell ya! Easton's guide doesn't cover any rest specifically you just use the procedures by moving your nocking point and your rest left or right to get proper tune.