Hey guys, this is my first post so go easy on me. I am new to the 450f crowd moving up from a 2006 Yz 250f. When during research on jetting I noticed that the 450f runs a smaller main jet than the 250f. I understand the the 450 has a 2 mm larger carb, but isn't main jet sizing nomenclature the same for any fcr carb. Thanks in advance.