I've just installed a fs2000 version of the J3 Cub (piprj3mm.zip) along with the fs2002 update (j3cub_02.zip) I'm using FS2002.The airplane loads fine but it seems rediculously underpowered. Sitting at Meigs, I applied full throttle and the RPM indicator barely went over 1500rpm. It also took the entire 4000 foot runway just to accelerate to 40 mph. I managed to lift off with extreme difficulty but could not fly out of the ground effect. Wound up in a high-pitch attitude with decaying airspeed about 10 feet off the ground.Does anyone have any ideas as to what's wrong here? I do not experience any problems with other aircraft.

Make sure auto mixture is enabled. Works for me.JimL