The supposedly unjumpable new BART fare gates are certainly deterring fare evasion, but some determined scofflaws are still finding ways to get through them without paying. BART’s $90 million, four-year quest to install evasion-proof fare gates finally bore fruit when the new, full-door-size gates arrived at West Oakland station late last December, and at Civic Center station in July. They’re currently being installed at the 24th Street BART station, or rather, they are already installed at the southwest entrance (the Taqueria San Jose side) and are still going up at the northeast entrance (El Farolito side), which is out of commission until they’re ready.