There are only two double leg stands that operate like described. The Pletscher, and the one by Velo Orange(?) I have two Pletchers, one in use, and another waiting for a reason to be. The one on our daily driver is deployed countless times a day for five years rain or shine and I've never bothered the adjustment. I may have tightened the bolt once. There is no possible way to add another bolt to the mounting. Possibly one could use some innertube or other compressible shim in the mounting plates to create a self-tightening situation but I have not found that necessary.