Hi - I have a 2005 Ranger Z21 Comanche with a Yamaha 250hp Vmax engine. The boat shifts into Reverse and Neutral, but when I try to shift into Forward, it jumps into Forward and then right back into neutral, and there is a red blinking light on what I believe is the Shift Actuator (a silver/aluminum box with a clear plastic top that's got 2 cables and wires running into it). It was working fine, but after a long bumpy ride back home, it developed this problem. I've checked the lower case oil level and it's OK. Any ideas?Thanks - Joe.