Hello, I recently purchased a "Knee Walker".

Because of its design, it uses a threaded headset. The walker came with a loose clanking headset, so I contacted the company and asked what size the headset nuts are.

Well, after an entire week of telling me to just use either Allan wrenches (yeah) and adjustable wrenches to tighten/adjust the headset, they finally gave me a size. They said the top is a 35.5MM and the bottom a 36.5MM.

Does that make any sense? I have never seen half size headset wrenches and I assumed the top and bottom (adjuster nut and lock nut) would be the same size.

Does anyone know of a sure fire way to find out what size the little thin adjuster nut is? So far, no stores have had a wrench big enough to measure, but now I am afraid that if I find one that fits the top nut, it won't fit the bottom. I also don't have an adjustable big enough, so I am ordering the headset and adjustable at the same time, so I won't be able to remove the top to measure the bottom.

I just recently became permanently disabled and getting around without this walker is impossible. Do you think I am doing permanent damage by using it with a loose headset?

Thanks for any and all help guys.