Your issue is going to need a bit more explanation.
Does it want to stall from a stop, or while moving?
What are your RPM's when it wants to stall.
(is your engine bogging, or is your clutch slipping)
I guess what I'm getting at here, if you're on large tires, and you're improperly geared, I could 100% see stalling as an issue.
My TJ was a HOG to get rolling on an incline, with oversized tires and improper gearing. It took about 2,000rpms from a stop to get it rolling until I regeared properly.
On flat ground now with proper gears, I cannot force it to stall in first gear.