WOW a .28??? that things got to be moving. is there any specific version of the o.s. .18cvr that i would need? I would like a pull start too. Do i need to be aware of any specfics when i buy it? (i'm not definite on that motor but just curious so i don't buy the wrong version or anything.) I have heard good things about the wasp, just not sure if it is worth the dough.....