We installed 1997 BF25 long shaft on my father in law's pontoon, motor starts and idles fine, in neutral revs in higher rpm range (5000 +) and once shifted forward, when full throttle applied - gets to 2500rpm's and stays there. It runs smooth. Some repairman suggested that prop might be spun but it was checked and no signs of that. Prop have 10 pitch. All cables are adjusted nicely, no free play and no loose cables anywhere. Can't figure it out, it feels like its running in a limp mode but can't tell. We are using controls from BF50 Honda, hope that's not an issue. When ignition switch is turned ON alarm/buzzer does not sound, not sure if it's even working. Fresh water pump and thermostat, water stream coming out from the motor is strong and cool. Motor does not have hydraulic tilt/trim, 3 wires coming out of control box are not plugged (loose) Carbs are cleaned few weeks ago, if there is anything else that might be clogged or dirty - please let me know. Did not check plugs...Any suggestion is welcome and appreciated, need to resolve this asap and there is no Honda tech anywhere close by. Thx