I have a 1991 JTLEIC 225 hp that I am redoing the carbs on. I am doing this for 2 reasons it leaks gas on some of the bowls and it will not stay running at idle. It will fire right back up when it dies. I suspect the idle problem is a badly engineered side plate. I will use a fender washer under the middle screw when I put it back together. The main question I need answered is about the orifice sizing. I was getting ready to order parts and I noticed that this motor calls for a .55 mid range orifice. The carbs have .47s in them. .33 for idle. The motor runs good once you get past idle rpm. Does anyone know if this will be a problem? The motor is new to me and I do not know its history. Any ideas on why they may have changed them? I need to know if I should order the larger ones when I get my rebuild kits. Any help here is greatly appreciated.