When I bought my bx-22 there were several fittings on the backhoe that would not take grease. I thought there was a problem with the grease fittings on the tractor, but it turned out to be a problem with the grease fitting on my grease gun. I went to tractor supply and spent $10 on a "heavy duty" fitting for my grease gun, and now all the fittings accept the grease. Apparently my old fitting on the gun did not hold tight enough, and the grease simply spilled out around the fitting instead of forcing it in. You get what you pay for in most instances.