GCMS using H2 carrier

I have a new GCMS and am using H2 carrier gas.  I am seeing unusually high background at around 80,000 counts and poor tailing on all peaks.  I have baked out the column and I have started to condition the source.  Anyone with experience using H2 have advice to decrease these two issues so it's usable?  Method parameters to use?  The method is for drugs/controlled substances.  Thank you!

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