Sorry to revive a 5 year old thread but wanted to chime in. I ended up ordering a sample order of 26 of these
https://www.alibaba.com/product-detail/Wholesale-Replacement-Parts-Thumb-Stick-3D_60311497386.html?spm=a2700.9114905.0.0.4ZJicz
They work perfect. I haven't tried any of the other blue...
