im curious to the out come of this. My cub did the same thing to me on saturday. I had taken it to the track 3 weeks earlier and had not a single problem. I was unable to launch the damn thing. Had to double clutch a couple times to get it to go. But as soon as it got into the top end, it ran normal. but it took 60ft to get to the point were the damn thing would go. I read this and pulled my reeds as well.(VF3's) I do have daylight between the cage and the center sets of reeds. The same for both sets. I did go thru and check for crap in my jets and the typical stuff. im just having a hard time believing that the little air gap that i have just appeared and is causing all these problems at once. Thoughts??
(421 cub, D&M Hillshooter/Drag port, 38mm airstrikers, vf3's, 188 main, 60 pilot, 7* timing, 20cc domes, 21x12x8 10pdl sls, 15-41)