Let me first say that i'd like to thank those on this forum that took the first plunge into buying and installing these. But not only that, posting up guides for everyone else as well. Well, with all the info I found on here I purchased the Koni FSD shocks and Racing Beat springs for my 2015 Mazda 3 Hatchback GT. I've successfully installed shocks/springs on my old NC Miata before, although it was quite a frustrating experience. So I thought i'd give it a second shot, and lo and behold the first shock I work on, the front driver's side shock, the sway bar end-link hex bolt hole strips. I even soaked it in penetrating fluid the day before, and again today. But I knew this was going to be one long journey of hell, especially with 3 other shocks to do and I can't be without my car for very long. So... I will be bringing it to the mechanic sometime this week to complete the job. Hopefully they'll be able to fix this. I guess you win some and lose some?!