Mark, the Cirkus was an entire sub chassis, inner hub + bearing, new armboard and screws, springs, grommets and a belt. The main bearings had suffered a few years previously with inadequate hardening of the thrust plates and this upgrade effectively helped get rid of some out of warranty examples that would have worn into a nasty 'burned black' dimple on both the thrust plate and the spindle-tip, the black oil only delaying the inevitable for some.

Mind you, the mid 90's saw Linn altering everything they made (almost) on a batch by batch basis and I was witness to a number of changes made in 1995 to each successive batch of Kariks and Numeriks that came along (a pal had a Saturday job at one of Linn's then biggest dealers, and brought 'new' examples home regularly to inspect inside and audition. Seeing this for myself and hearing the consequences is how I can retell it).