Why did you need to replace the helicoil? I'm thinking about stripping down my calipers and cleaning them as I think I have a sticky piston. I tried cleaning by bridge bolt sleeves but couldn't shift the dirt so may invest in some new ones.
Helicoil just wasn't there anymore!!
It sounds crazy but after having pads and discs replaced (I was being lazy that day!) I had a look at the caliper to see if they'd cleaned them up any and noticed a rather large threaded hole in each caliper.
I checked a couple of photo's and they've been missing for some time...
At some point in it's life it appears that 1 helicoil, 2 bridge bolts and 2 bridge tubes might just have fallen out of the calipers.....or some dodgy individual messed up the helicoil, didn't know
how to fix it so took the same bolt out of the other caliper to make them match!!!
Sounds crazy but I can't understand how that lot just wasn't there anymore!!