All my bikes are well within min insertion limits. However I just went and checked the one bike that I have concerns with. It had a replacement fork, with lots of threads, and had not been cut yet. So there was a lot of spacer. This is the way I got frame/fork/headset from previous owner.
I am using a 3T Record 84 stem with slot and cone shaped nut (not the angled wedge type).
Even though stem was inserted 20mm deeper than the minimum insertion line, the bottom is only about 4mm past threads, probably 3 if you subtract the chamfer at the tip 😮
I will definitely cut the fork to get additional stem length past the threads. I will keep same stem insertion depth and accept lower bar height.
Not only will it be more robust, but will be lighter and look better as well. 😀
