Skip - that looks pretty similar to mine - some differences in the mount from the stand to the boom fitting but that's about the major difference. Oh, my boom is telescopic, not separate sections.
Um - my castors sometimes 'move' off-centre and the whole lot takes on a very unbalanced attitude. I re-position them and am now aware of their dereliction to duty so I watch them - one of these days I may just drive a pin through the fitting and that will stop them twisting on the legs.
Thanks, Les, for the tip on the extra weight at the bottom. I have some old (ancient - original lead type) diving weights around here so may press them into service.
Have fun, Skip - remember, they are not only for getting the light up high. My normal stands don't go down too low so I often use the boom to slide a light along at just above floor level, angled upwards. It's a very versatile tool.
Speaking of tools, have you tried angling the head with softbox on any unusual angles and noticed any slippage without that flat on the spigot? If it's working fine, great. If not, a couple of minutes in the workshop will fix that problem for good.
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