Link 2000 meter question

[Analgesic]

I just replaced my 4 golf cart batteries and my boat has an old Heart inverter/charger Link 2000 set up that seems to have worked flawlessly for the 13 years I have owned her.  The boat is on the hard and when I attempted to charge them using AC power, it took longer than I expected to go from Charge to Accept and never went to Float.  The  cold volts reading on the Link is 12.35 V while a direct reading on the batteries with my multimeter gets 12.64 V.  At the same time, my starting battery (a wet cell 12 V) matches exactly and it has a much longer wire  run to the Link unit.   My boat lives on a mooring all Summer so all future charging will be via alternator until next Fall.  I have already reprogrammed the unit to make up for the "gotcha" bug discussed here previously.  I don't want to harm my new batteries with incomplete or inaccurate charging.  To those smarter than me, does this sound like simply a bad or undersized sensing wire?  Is there an easy test for this?  All wires disappear into dark places and before I start down this path, I wanted to see if there might be another answer.  Thanks in advance for any guidance. 
Brian McPhillips

[KWKloeber]

Brian I wouldn't suspect an undersized sense, after all it's measuring voltage with virtually no current flow to eat up voltage.  If I could, knowing zero about the Link and any oddities, I'd likely start with my meter on the sense, disconnected from the link. On both sense wires just for verification. 

Ken

[britinusa]

Brian, we have the Link 2000-R but I'm not aware of the 'gotcha' bug you refer too!

Can you point me to it?

Paul

[Dave Spencer]

Paul,
Here... and in 101 topics.
http://c34.org/bbs/index.php/topic,4922.0.html