I can't speak for the SRT's but the R/Ts with manual transmissions also have this 1-4 skip shift feature and it only activates within some specific ranges of operation. The engine must be warmed up to normal operating temps, vehicle speed must be between about 18 and 22 miles per hour and throttle postion must not be more than 25% depressed.

The Skip Shift eliminator is availabe and you should be able to get one for about $20.

See this link for more info in these forums...

skip shift eliminator thread