I told the lineman that I didn’t need to be marshalled out and he returned to his slumber. After engine start with all the gauges in the green, I noticed that I needed more power than usual to get the Tiger moving. I taxied to Runway 14, listed as 8,199 feet of asphalt, more than enough for my 180 horsepower Tiger to take off, or so I thought. I announced my intentions on the CTAF, lined up on the centerline and pushed the throttle forward. The Tiger’s response was lethargic to put it mildly. I checked the parking brake, because I thought maybe I had left it on during runup, but it was off.