Xmsn slip

[Battlebugs]

After a few hours in 4L lock last weekend (the SA Devil's Den run) I was experiencing transmission slip in drive after going back to 4H(seemed to slip shifting 3 to 4), by manually selecting 3 it would catch again (of course RPMs up around 3.5k at highway speeds). After about 20 minutes on the highway the transmission operated normally again and has not acted up since. Anyone experience this or something similar. 31k on the odometer by the way - still under warranty. I'm just concerned that the dealer will give me a "could not duplicate fault" when I take it in.

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