Interesting, my MIDI was early, not late like yours, and a positive offset solved my problem also, so this kinda doesn't make sense, but the important thing is that it helped.

Your Elektron may have a VST interface, but it's still a hardware synth. The sound is not being generated from inside the computer itself, hence the latency discrepancy between it and your other "real" VSTi's.

But if I'm understanding correctly, it sounds like there's also a discrepancy between the Elektron synths and other hardware synths; that's the bugger. Since all offsets and record compensation settings in SONAR apply universally to all I/O, there's no simple set-it-and-forget-it configuration setting that will address that.
 
Also we need to clarify whether we're talking about real-time playback sync or compensation of audio recorded from hardware synths, or both.
 
If it's only about playback sync, one workaround would be route all tracks and buses other than the Elektron stuff through a 'Delay' bus that delays them to be in sync with the delayed output from the Elektron synths (kind of like manual PDC). But, again, that's going to get awkward/complex fast, and cause problems with input monitoring latency while recording.
 
I would be inclined to work this issue with Elektron support.

What's going on, bigfrog? Inquiring minds want to know. Did you get everything working?

Hey guys - No, still having issues but I did have a nice day away from the box.  :)
 
Brundlefly - My other hardware synths are all MIDI and are currently in sync with the DAW.  So I was able to resolve that!  The latency occurs during real-time playback sync. I can bounce down the audio from these devices via the VSTi plugin and that is in sync.
 
I've also opened up a post on Elektron's forum but despite having a lot of views nobody has posted... it's mostly a Ableton and Mac community.
 
I am going to open a support ticket with Elektron and see where that goes.  The Overbridge software is pretty new, the first official non-Beta version was released this past May I believe.  They might have a new version coming up.
 
Another thing I might try is downloading a trial version of Cubase or Ableton to see if the issue is pc-wide or software specific to Sonar.
 
Thanks again for the feedback and the followup!
 
John

So I downloaded the trial version of Cubase and it works perfectly.  I didn't even mess around with any of the nitty-gritty settings, I just set the basic sync settings and pressed play.
 
I've been using Cakewalk since the early 90s and I've long said that me and Sonar are like the couple that should have broken up ages ago, like over a decade ago.  
 
At his point I've probably spent just as much time fighting with Sonar as making music...
:|

I hear ya! I have the same kind of relationship with my Line 6 UX8!