I am thinking about replacing the strap on my Omega FOIS and wanted to get some input as to how hard it is to change out straps with this particular model ....I don't have a tool to do it with but I tried to change out straps on my Bremont watches and I scratched the lugs.... I don't want to do that with this new watch so I'm scared to death ...lol.... do you guys suggest to have a professional put it on for me or should I do it myself ? If I do it myself what kind of tool would you recommend .... and apologize upfront if this is a stupid question ... i'm kind of OCD about scratches and fingerprints on my watches... I would rather be safe than sorry