I am new to the tuning business andjust have a couple quick questions.....When setting a nock point does one set this dead center between cam and idler wheel then adjust rest to center accordingly(shooting carbons). Also-do I need to worry about my d-loop moving. Should I set a know point inside it for good measure?? Help!!What is a good video or book that will help me with the new bows and equiptment. We shoot matthews if it matters??