Bf225 with 480 hours in great shape working flawlessly. Started starboard engine last weekend and the tachometer showed it was about 1200 rpm at idle. Normally about 800 at idle. Took her out and oil, volts, water all checked fine. Engine did not sound like it was revving any higher. Checked motor again yesterday and tach still at 1200 at idle. It does not appear the motor is actually running at any higher rpm than the port engine or higher than normal. Wondering if these techs can go bad or out of sync etc. looking for any advice. Thanks in advance.

