Take your time!
The product works great but I would advise taking your time and don't force it.<br />I trimmed the brush to about an inch over the corner to corner dimensions of my chimney.  That was almost 4" of excess!  There is no good reason to need that much other than potentially binding up the brush and snapping one of the rods.  It cleaned perfectly.<br />While I appreciate the push button quick disconnect on the rods, this is not a process where speed is a concern.  There were multiple times I gave the connections a quick tug before sending them up and they pulled right apart.  That button has to be PERFECTLY seated to hold and the tolerance from hold to release is VERY small.<br />I would suggest the manufacturer switch to an allen-keyed set screw instead.  Screw it in to disconnect, screw it out to tighten.  Yes it would require an extra 30 seconds to assemble and disassemble, but nothing would be more catastrophic in this process than having a rod disconnect halfway through, leaving the brush and remaining rods stranded in your chimney.<br />Try to imagine THAT rescue plan!
Rating: 4 stars