Point Four, welcome!
I have the 2wd version, YM240, with a heavy loader.
The steering is impossibly heavy until I start rolling then it's very light. If the bucket is full of dirt it is a little stiff but not too difficult, for any speed above a crawl.
Sometimes when I have the bucket or front forks heavily loaded and I need to start out in a new direction, I force the bucket down to take the weight off the front end, turn the wheel, then lift the load and start off in the new direction.
Mark covered diagnosing a problem. I wonder if soft tires could also add steering effort.