qais_vtec

Hi I locked the vtec rockers and tried to get the limits by fully adv intake +10 and retard exhaust - 10 on aem tru time gears but no contact, same when both cams are adv +10 and ret - 10. Head is definatley skimmed, b20 block was skimmed once by me too. Oem b20 headgasket used. Camshafts are edelbrock 4730, pistons are ycp cast (ITR or b16a spec not sure). Am I doing something wrong because that's alot of adjustment with high lift cams although they've got relatively low duration. Anybody help?