So, another update. I tried cutting the stems of two keys (The "1" key and "," key) and I ended up screwing both those stems up for keyboard science. The shape looked right but when I put it on the board it was waaaay too loose. Then, right AFTER, I found out that these caps just fit right onto my Leopold FC660C without any modification at all. Like I said in the previous post, these caps were semi-low profile, but they actually don't really look shorter than the stock keycaps. The biggest thing though is the feel with these keycaps, these caps give it a VERY tactile feel. They feel stiffer than stock keycaps and the bump is accentuated. At the very top of the switch you can notice that these are a whole lot stiffer than stock caps, and the bump is more pronounced, and I think this is due to the profile of the keycaps. The caps have slightly varied heights, but it looks like this is caused by inconsistencies in the stems of the Topre stem itself. My "h" and "," caps are lower than the rest of the keycaps on my particular board, and at first I was getting a repeating key for both those letters, but I adjusted the fit of the "h" key and it seems to work perfectly now, though I still sometimes get a repeating key with "," but for normal use (Pressing it once, and not trying purposely to get the key to repeat) it seems to do just fine. I wouldn't say that these caps make the board thock more, because it's probably just placebo, but the extra tactility and bump is definitely not.