Looking for some ideas on a problem I have notice on my 08 V. When starting it seems a little slow turning over and runs a little rough for the first few seconds. Thinking it may be my battery, I check the voltage and it was 12.23V. Next I checked it running and it was about 14.2V. Then I notice when I increased the RPM's the voltage dropped to 14.0V. Anyone have an guidance on these symptoms?