Sounds like the thrust bearings in the A post are getting bad. On the Ms & SMs I have taken the sector gear & turned it 180º plus done the same on the steering worm gear. The teeth get worn & sloppy & by turning 180º it puts the mesh point on different teeth. I'm not familiar with the 300s but would think you could do the same.
BTW, this can only be done on tractors that have a full sector gear. A lot of the Hs & Ms had a 1/2 sector gear
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Today's Featured Article - Tractor Traction - by Chris Pratt. Our first bout with traction problems came when cultivatin with our Massey-Harris Pony. Up till then, this tractor had been running a corn grinder and pulling a trailer. It had new unfilled rear tires and no wheel weights. The garden was already sprouting when we hooked up the mid-mount shovel cultivators to the Pony. The seed bed was soft enough that the rear end would spin and slowly work its way to the downhill side of the gardens slight incline. From this, we learned our lesson sinc
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