so i restored my fair share of filys, one thing i believe is do as little as possible.... you dont want to wash out the etching of the crisp lines of the razor. Additionally most filys are pretty hollow so ruining the temper is a concern, what kind of equitment do you have? are you using a buffer or just good ol' sandpaper? another thing i try and do is not wash out the original grind lines and the beautiful satin finish they have. i also make sure to get the jimping on the razor, ive had the most luck using greaseless on a slow speed to get that and it makes it look like new again....

the scales are just like any other just avoid the logo, i made the mistake of thinking it was metal and not paint so i lost the logo on my first restoration.

best of luck brother
Fonz