Totally understand, that is part of my confusion. He said that the 91 had 2.8 HP and the 120 had 3.1 HP so hardly any significant difference. He then went on to say that the four stroke was indeed a different animal. Would provide more power for verticle and slower top end speed. He ended by saying that the penalty in weight and $100 more cost would no way make up for the marginal performance increase............sorry, just repeating what the OS expert at GPtold me. I believe you people however, the knowlege level on these boards never ceases to amaze me.,
Steve