Nah, that won't have anything to do with it, that is down to the bowl and bulb placement. Honestly leave it be, gotta understand these are base projectors so somethings aren't 100% compared to the Lexus OEM (not this morimoto duplicate crap), as long as you are happy and no one is flashing you, don't worry.
Like Russo said, the Xb bulbs are very hit and miss at times and hence why I said the options for h1 bulbs tend to be limited.
You would be surprised on the other HID forums how much crap Morimoto catches for shady quality control considering TRS makes them out to the bee knees, not saying they are bad...what has made them so good is TRS does most of the QC and has great customer service.