High resolution columns VF-624ms 0.15 mm ID with headspace 7697A


I want to know if there is someone in this Agilent community has been working with VF-624ms 0.15 mm ID with hydrogen and with Headspace 7697A. 

I do have band broadening peaks problems for the early peaks and I wonder if I would need to change the transferline ID from 0.53 mm to 0.25 mm? 

thank you for your help. 

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