Hello Gary and Welcome to the forum family . The 88/89 are known for this "dead spot " while accelerating . While your carbs may need a thorough cleaning there was a factory repair to help solve the problem . They increased the jet size in the carbs . I think if you do a search here you can find more info on that . My biek is newer , so I dont have the info handy myself . I expect there will some others along with more ideas as well .