I'm getting my trailer ready for spring and appear to have lost my hitch wrench. I discovered that by using the jack to lift most of the weight off the bars, I can use a small 1" box wrench to do the job. I can buy an official blue ox wrench off amazon Canada for $27 or buy a good sized box wrench for less. Any problems with using a non-oem wrench? Personally I prefer the feel of a regular wrench over the stock flat bar that came with the hitch!