G1364F skipping collection vials

Hi all, 

 

I'm using a 1260 LC/MSD and triggering fraction collection on selected masses. This appears to be working correctly, but I've started seeing an odd behavior with the collector. I'll enter a vial position for collection to start in, but at the beginning of the run the needle will choose a different one (for example, I select D1, it starts in D4), and then once collection starts, it will collect in non-consecutive vials for no reason I can find. For example, one run collected consecutive volumes of a single peak into D4, D6, E9, F12/3/4/5. This has occurred on several runs, not generally into the same wells, once resulting in 'collection' onto the floor of the FRC, as I'd only loaded a single rack of vials and it 'ran out' of spots after skipping almost all the available vials. 

 

If anyone has advice on this issue, I would appreciate it. Thanks.

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