Originally posted by broderick:
get a new bolt and nut and press it in??
Not quite. The bolt is knurled at the end and by using the impact, you stripped the frame. Using new bolt might help a bit but VERY unlikely - it will spin in place.
You have 3 options:
1. Leave as is and have the alignment guy yell at you.
2. Try new bolt and hope they work.
3. You can have the bolts tack welded to the frame to aviod them spinning and making the alignment guy happy.
1. Installation is HELLA fast using said impact.
2. Might actually work
3. Make friends with alignment guy
1. Alignment guy mad at you. May only be mad once after camber is set.
2. May not work.
3. Removing arms in the future maybe a bit more difficult. Turning open end wrench a 1/4 turn at a time takes A LONG TIME. I suggest you buy a closed end wrench that has a built-in ratchet for faster assembly.
BTW, I used an impact too. I didn't know they were knurled either. I chose option 1 and got lucky with the alignment guy. He may have been pissed but I left the car with him and didn't hear a thing when i picked it up.