The little knob (as per the picture) sort of came off after becoming a bit loose. It seems that the little "screw" that holds the knob to the metal thing won't keep it in place. Is there a tool that I can use to tighten it ?
You picture is not clear enough to show if the screw is a normal slot type, which would require a small jeweler's slot screwdriver to tighten back or, a hex screw that would require the appropriate hex driver, ( sometimes called an Alan key), to tighten it back up.
Either way, a trip to any decent hardware store or even Radio-shack, would stock the appropriate tool.
It looks like a little hex set screw to me (Which you can buy very inexpensivly for a whole set or even just borrow one), but is the knob plastic? I ask because obviously that could strip out if you over tighten it (Unless it's in like a theaded collar that's set into the plastic, or unless it threads into the pot shaft, but I doubt that).
I think it'll be fine if you just tighten back on.
Thanks Jeff and Billy! Yeah, upon closer inspection (not too clear even with close-ups) it seems that it is just a hex screw. I'll see if I have a tool like this at home and if not then it's to radio shack!