Looking at the datasheet for the lm311, the output is a transistor (I think it's shown on your schematic), the reason you need a pull-up on it is because it has no bias or power. That will let it pull the voltage down. If you're noting that it doesn't rise fast enough, try making that 100k smaller, give it some more strength.
. The 741 on the other hand has a pair of transistors on the output stage, attached to +v and -v so it can push and pull the output
The trip though will get you a cpap potentially, and those after helpful if you do have apnea.
If you have apnea and you see a doctor, you'll sleep better with the CPAP, give it a week or two though.
I heard he names his basement's couch Shame and feels it all the time
What's your schematic with the lm311 ? Input impedances, output impedance, voltages, etc
How's this for slop? 
Stop being so violent and divisive by pointing out reality!
Probably asked for back pay
She must be so pissed, gonna make him sleep on the bed
Top Trump Officials Are ~~Moving~~ Retreating Onto Military Bases
And it all started because you gave a mouse a cookie
It's likely a ratio of water area to corpse volume. With a multiplier on presence (visibility, smell, people talking about it, and hell, if the corpse is making noise that I hear, there's no chance I'm getting in that water)
Unfortunately, capitalism demands that MY employees have no free time, to keep the quarterly numbers up, but everyone else's employees need to have free time, to spend money.