I got a pipe from an 'estate' sale yesterday. Started messing with getting it cleaned up. It's a Wally Frank Ltd. and a nice bent bowl...curved stem...couldn't get my pipe cleaner through the stem. There was obvious detritus caked up there..dry...whitish..and I started prodding it with a cuticle tool...and snap...the bottom riser snapped off..I guess it's time for a grinder?...darn it.