John(uk) has told us many times over how important the draft control spring adjustment is for the lift to work properly. I was installing the bracket for my Dearborn mower below the top link rocker and I thought I would check my adjustment. I adjusted it last summer but I thought I would check it again. I stood on the lift arms and although I"m not a 2 bottom plow I"m still 225 pounds so there was weight on the arms. I now know why Ferguson used such a fine thread on the plunger. All within a few turns of the yoke it would either not lift at all, work properly, or the lift arms would stay up and wouldn"t lower. I had always believed John(uk) on how important it was but I never would have thought that just a few turns of the yoke would change the lift that much. So if anybody hasn"t adjusted their draft spring I would highly recommend it, just remember if the yoke is stuck to heat it cherry red first before trying to turn it.