I don’t have a clear picture of why and how the sliders can be adjusted, and what the implications are if they only lock on one side. Also, I’m 5’4", so I don’t know if I’ll have the opposite problem from yours! I guess my main issues are: Will it fit the H3 and perform in a stable manner? And if adjustments are needed, is it adaptable enough to accommodate those adjustments? And can a not-particularly-skilled person make the adjustments properly?
Thanks for your help with this! Much appreciated.