me too. brand new 2018 gti SE out of the box, first time in water, within 10 minutes IBR failed and stuck in R. had to go back to dock in R and never went into F since August. ibr gate stuck completely down, tech tried to disconnect ibr gate, and no codes even went off, computer said nothing was wrong with IBR at all. took him 3 hours trying to recalibrate and remove fuses, and no codes still. finally after hours, it threw 3 codes. 1 was for left throttle lever failure. he is going to replace that, and see what else.
i am pissed off. what reliability does this ski have? its brand fucking new! and i left yamaha for this.
keep me posted on what happened to yours. i will do same.