what to do now?

[jhautz]

No. If I remember right, they were just a little to big in both length and width. The exact measurements of my packs are 2.0in x 5.7in including the bulges on the ends where the wires are under the shrink wrap. Measure your battery tray. Also, it would have been a tight squeeze for the 3s pack to go in and out without damaging it on the edge of the motor plate.

I haven't tryed it in a long time and I don't have a stock chassis around here any more to check it out.