That eccentricity of the inner platter is one problem the Lab 80 did NOT have. Like the Garrard 301 and 401, and unlike any other Garrard idler-drive automatic, the Lab 80 had a single-piece, cast nonferrous alloy platter that had its drive surface precision-machined prior to the platter's being dynamically balanced. All other Garrard automatics had a separate stamped-steel inner drive platter. If there was a larger outer platter, whether cast nonferrous or stamped steel, it was either attached via riveting, or sat on top of the steel one (those DID have the locator lugs machined to a precise fit, however that did nothing for the drive surface of the inner drive platter..

Garrard's engineering director, Mr. Mortimer, wrote a treatise about transcription turntables in the early 1960s. He specifically stated that the stamped steel platter was inadequate for the kind of precision needed in a transcription turntable, which by then was the Garrard 401.