The stem on my current bike has always been too long. Its time I sorted it. Problem is its a 1 1/8 steerer and a 26mm clamp, which seemingly are not so popular and hard to find. I have found a few but they are 80mm. Currently I have a 110mm and was thinking of a 90mm. I have heard going to short causes handling issues.
Anyone got any experience? Would the 80 work
Handling needs to be considered as part of a “system”, I prefer the handlng with a shorter stem, but on a very nervous frame, a short stem could make a bike even more twitchy.
For me 80mm and 90mm stems are my prefered length
The innuendo possibilities seem particularly strong in this thread 
Well obvously my stems do need to be super stiff
Do you really crank it out hard when yanking on your bar?
Since I am standing most of the time, I yank really hard