I have had trouble with the pinpoint system since new. I have had one gps module and one power module changed on warranty, both times the problems would settle down but never be 100% good. I have done both alignment and compass calibrations all the time with no change. I run the TM on two different boats and nothing gets better. Seems the XI5 is good for some and bad for others. Has anyone cured their lemon XI5? I do not have Lowrance to do an update, do you think this would help? Do I dare try more boards or just change brands and move on? Any help appreciated, Thanks.