The invention is an improved power transmission drive, for an internal combustion engine. The gaming system accumulates a quantity of progressive event points for each player playing at one of the gaming machines in the gaming system. The barrel connects to a vacuum source and is slotted from a forward dust colleting end to the web, and the slot is stepped a selected distance apart from the inner wall upper edge to function as a baffle for increasing vacuum efficiency. The wire is configured such that the molten metal adheres to the wire when the wire makes contact with the molten metal. If an error is detected by the host, the host issues a second command to the RAID controller to reconstruct the specified data, rather than merely re-read the data.