PLEASE HELP!!! 2002 GSXR1000. Bogs down bad during medium to hard acceleration regardless of gear. Usually does this between 3K-4K rpms but now seems to be happening with any hard flick of the wrist. Injectors cleaned less than 200 miles ago. Brand new hot spark plugs, cleaned fuel pump out and clean filter on it, fairly new air filter (doesn't look dirty). I noticed the exhaust actuated control valve doesn't operate when I turn power on. Service manual says it should open full range and return to mid position. So, will the bike bog down if the actuated exhaust control valve does not work properly or at all? Any ideas on what to check before I take it into a bike shop?