Looking for Replacement Parts

I finally gathered up the courage needed to open my Joy-Cons and replace the joysticks. (Of course, the guide on here telling me that they don't need to be soldered in really helped.) Partway through working on them, the L-button spring pulled a vanishing act. After much searching, it turns out it had jumped ship only to stick to my screwdriver. I took a while to calm down after that scare, and then decided I need to buy some backup springs. So, does anyone here have a place they purchase Joy-Con parts that can be trusted? I looked at a few places, but the negative reviews were downright scary. I'd rather not buy too much off of Amazon, but have yet to locate much else.