WICHITA, Kan. — The biggest threat to Wichita Thunder’s three-goal lead after one period Thursday against the Fort Worth Brahmas wasn’t the two goals the latter scored in the second period.The Brahmas’ real momentum seemed to come when they withstood a 5-on-3 Wichita advantage for more than 90 seconds early in the third period — a vital stand that figured to spark enough even-strength offense to tie or perhaps win.But Fort Worth couldn’t consistently slow the efficient Thunder offense. Greger Hanson added to the lead later in the third, an important goal in Wichita holding on for a 4-3 victory in the team’s Central Hockey League semifinals series at Intrust Bank Arena.Wichita leads the best-of-seven series 2-0 but must wait six days for Game 3 on Thursday in North Richland Hills, with Game 4 a week from Saturday, also in NRH.“Those are two big wins,” Thunder forward Ian Lowe said. “We’ve got to go back down there and play, and it’s tough to win down there. It’s good to get some confidence and kind of show them that it’s going to be a long series no matter what.”Lowe sandwiched a power-play goal between RG Flath’s two goals for the Thunder in the first, Wichita’s third straight goal with a man advantage after cashing in two on Wednesday.Fort Worth seemed most concerned early with limiting Wichita’s scorers, which proved unsuccessful when the Brahmas pulled goalie Kristofer Westblom after the Thunder scored three goals on seven first-period shots.The Brahmas, who were unsuccessful in three power-play attempts in Game 1, used the extra man Thursday to finally find an offensive rhythm. Their 25-22 overall advantage in shots was largely due to the added attempts it got during three power plays in the second, two of which were converted by Ross Rouleau.Other than the power plays, Fort Worth struggled offensively, and a strategy to keep it a low-scoring game and force the Thunder to grind for goals backfired.Wichita didn’t take a shot until nearly six minutes passed, but it scored on the second shot — a rebound from the first. Fort Worth often kept defensemen back when the Brahmas had the puck in near the Thunder net, a plan that limited the Brahmas and ultimately did little to stop the Thunder.Wichita’s forwards found openings in the defense and were perfectly positioned for rebounds. The three-goal lead initially didn’t hold up, as the Thunder managed three shots in the second period to Fort Worth’s 12.Wichita’s lead disappeared quickly, and Fort Worth was in position to scrounge up one more goal and take control after stopping Wichita’s 5-on-3 advantage.But the Brahmas were never again on the power play. Hanson converted a breakaway, a crucial insurance goal since the Brahmas scored with about five minutes to go.