Helicoil threads - Swampfox 1913 Low Profile Picatinny Base Mount

Both Helicoils were damaged during installation of my Holosun 507. The threads on the mount are too big, so helicoils are inserted to reduce them down to the correct size. The Holosun screws have a threadlock paste on them that locked up the helicoils. While trying to turn the screws in it got so tight I thought the threads might have been cross threaded. After about 30 minutes of wire brushing the screws, turning them in, backing them out, and repeating, I was able to scrape most of the threadlock off, but also broke the thin, non-helicoiled threads at the top of the mount, as well as damaging one helicoil. The helicoils themselves are also only 3-4 full rotations and not the full depth of the drilled holes in the mount. With enough time I could probably get my Holosun mounted, but based on what I have seen I wouldn't fully trust it to hold.
The picatinny mount seemed solid enough, and the side mounting bracket was spring loaded which is nice.
The dot itself also fit the mount fine, I just couldn't get the screws down enough to secure it.