Absolutely essential when changing any strap or bracelet use electrical tape or any tape of substance to tape up the lugs. It’ll save your watch from getting any scratches on the lugs......if you have a cheaper watch practice on that first. There are some great tutorials into you tube...this one is great it’s for a Rolex submariner but you’ll get the idea. I used this and it helped me. Preparation is the key and using the right tools for the job.
Changing straps is one of the joyful things about the speedy, you’ll get the hang of it and will be doing it in no time.....I don’t trust ADs to size or change any of my straps. Here’s mine on a sailcloth strap....good luck and take your time, and tape those lugs up.
https://youtu.be/2lRSYIyhDro
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