Hi,i am thinking to buy a new fretsaw. It is set with spare blades and fretboard templates and will help me very much. The problem is,the saw i am using now is 0.4mm and i use it with 0.55mm frets. The fretsaw in the package is 0.6mm kerf. What kind of fretwire should i use with this one? 0.7mm so the frets will stay in their place?