Checkout layout modification
 

I noticed that some of our customers are filling phone field on the checkout page with the second part of the UK post code which obviously results in errors and people dropping out .
I think the way the resolve this is either move the phone field under but it will mess up the whole layout or I am thinking to push it to the right 3-4 spaces .
I am having some troubles finding where to make this modification.
I had a look at adress_info.tpl and adress-fields.tpl and other tpl's in the the following folder /common_files/modules/One_Page_Checkout/ .I can't figure yet which file I need to modify.
Can you please help ?

Re: Checkout layout modification
 

Any luck modifying this?

Re: Checkout layout modification
 

I made no progress unfortunately.
I would love somebody to give me a help with this but it seems I have to ask Qualiteam .
I will keep this thread updated if I get a solution.