My S4 'sticks' when I punch it to take the RPM above 5K in 7th gear (DCT). I have to switch over to Automatic D mode while tapping on the gas pedal lightly several times in order to lower the RPM to match the speed. This only happens when the transmission is in the DCT mode; i.e., no problem whatsoever in Automatic D mode. Has anyone ever had this type of experience? Took the S4 into the dealer, but they can't seem to come up w/ an explanation. I would be greatly appreciated if anyone can shed some light on this.