Just getting back into recording and have upgraded my whole setup.  I'm noticing, though, that when I record a mono track and listen back to it in Solo mode, there's some bleed through on one side despite being hard panned (happens on either side).  However, when played back in a full mix, I can tell that the track is panned, but it's still bugging me.  My previous versions of Sonar didn't do this.  I have the Master  Interleave on Stereo.
 
I'm sure it's a noob mistake given all my new gear, but any help is greatly appreciated!  Thanks in advance.

I think you'll have to provide more details. What and how are you recording the track etc.

Guitarpima
I think you'll have to provide more details. What and how are you recording the track etc.

Thanks- let me know what else would be helpful:

I have my guitar running into a Line 6 KB37 (basically a POD device). The outs from that go into my PreSonus 1818 input 7 and 8.

In SONAR I have the input as PreSonus 7 Left mono. And the Output as Master.

Ok, I figured it out - the 1818 interface has a software mixer (Audiobox) that needed a tweak.  You have to go into the mixer and "link" your DAW Output.  Once you do that, you have a full stereo field.