[pHotoman41]

I'm repairing items on my 31 Open that I purchased two weeks ago. One item on my list is the replacement of my starboard fuel tank sending unit. My fuel gauge shows it to be empty, yet there is fuel in it. I suspect it is the sending unit and I have replaced these on my previous boats. Tiara quoted me $170.00 to replace with factory unit. Has anyone used the Moeller brand of sending units that are available at West Marine? Are the mounting holes in the base universal? I noticed that the wiring on the factory unit are encapsulated while Moeller is not. Not sure if this is a big issue.

Sorry to say I can't provide any insights.  I purchased a 31 Open last September and have done a fair amount of work on it including an extensive water removal project on the hull caused by a poorly designed anchor locker drain.  You might want to check that to make sure your drain is thoroughly sealed to avoid wicking into the core.  I replaced all of the accessible thru hulls because the plastic was crumbling from UV exposure.  I had some new canvas made and replaced the combing pads.  The final major cost was having a custom mattress made.  I have a crappy back and can't sleep on a board which is about what you have with the original mattress. 

I launched yesterday only to find the water pumps are leaking.  Yet another project.  Have to order new pumps and install them.  Hope to get them done quickly because rockfish season is in full swing.

Good thing we love our boats because they are pretty expensive play things. 

I know the level of responses on this site can be quite low.  I thought I would respond to let you know there are a few people around even though I am of no help.  For what it's worth, if it were me, I would go with Tiara and be sure everything lines up unless of course there is a big price differential.