the trace functions in any of these programs never give a very clean outline with hundreds of nodes and by the time it does the trace then you clean it up you have spent far more time than it would have taken for you to just trace it manually. i gave up on the trace 20 years ago. you should be able to hand draw that 302 off that picture with most vector software in 5-10 min and you will have a super clean and precise file.
if you dont really know how then i could do it maybe over the weekend when i get a few min, just let me know.