I’m glad you started this thread Frank, I was only looking at strap locks today, having never had them before, I shall be watching and learning with interest ☝️
I play 4 string jazzes and sandberg , and I bought my first 5 earlier this year , it’s a Yamaha 415 , really nice neck profile and a 40-41mm nut , and a nice B string, I would recommend one of these , or similar, if you want a good place to start 🙂
I’ve done a few, as leschirons says it’s fairly easy once you’ve removed the parts, just don’t over heat it ,if you are Near East London, you’re welcome to borrow my heat gun 🙂
I love them, they are perfect for what I play, like you say they are warm and thumpy but not muddy, I’ve had a set on my old shell pink fender jazz for about 5 years and they still sound great, I also have a set on a tokai jazz which sounds really deep and punchy. Imo, D’addario do the best tapes, they also look really cool on your Warwick ☝️