Hello and thank you , yes , absolutely , I wouldn’t touch anything on a watch that I’m not comfortable with, I only on simple thinks on simple watches , but I’m finding out by now , that no watch is simple 😊 all my chronos will wait for professional service when needed, I’ll include pic of some of my chrono family together, thanks again ,by the way , I find myself having trouble opening the snap casebacks , don’t want to scratch it with the primitive knife opener , any recommendations on getting decent reliable inexpensive opener ,? thank you guys for all the help , it’s a pleasure an honor to engage with top notch enthusiasts with great knowledge, good day , here is the pic of the chronos family, a portion of it, some members ,resting in the safe haha, kazd