[brainanator]

Have you tried different firmwares? I know that the newer ones seem to have poor start up procedures. I think 1.24 is the most popular, not a 100% sure on that, but someone who knows better than I will come and chime in shortly.

Is this a new issue or have you changed something? I mean, was it working great and then suddenly started cogging and struggling, or has been this way since you've gotten it, or did you change something recently? (gearing/firmware/tires/rebuild diffs/bearings/water running/etc)