YES!!
I was real tempted to just leave it at "yes" (as it applied to all) but then re-thought my evil, nasty, crusty exterior and .........
The concave area on the bottom of the bolt is to smooth the Bolt's movement over a fully cocked hammer. The bottom of the Bolt and the contact area of the hammer need polished. The hitchieness of which you speak is caused by a number of things, not just that concave area.
Reducing the springs in a '92 accomplishes "all of the above." The lever latch spring is about 20 times as stiff as it needs to be. Reduce the spring and polish the latch pin and you'll be amazed at the improvement. Reduce the Ejector spring. Way too heavy. Depending on Mfgr, CAREFULLY reduce the Extractor. Way too heavy. Reduce the Main Spring. Way Way to heavy. Rub-N-Buff the areas that show contact wear. Don't remove metal, just polish.
The simple way to do all the above is simply to purchase a Reduced Spring KIT. That way, the only thing you'll need to grind on will be the extractor. Exercise EXTREMA care with the extractor. By reducing the above mentioned springs, you will have reduced undue wear to the moving parts of the rifle and ........ it will suddenly run extremely fast with just ONE finger. The last item up for bids is to carefully shim the right side cartridge guide until it just "kisses" the rising cartridge. This will eliminate popping out live cartridges (when you go fast) and prevent stove pipes.
Coffinmaker
PS: Or as I was want to say originally >>>>>> YES!!