Question for my fellow professionals

Charlie from wmass

I am looking at another fairly new over sized boiler. 456 square feet where 354 would have done. Convector system and I installed a vapor stat. Boiler is an atmospheric natural gas and is running at the low fire for the number of sections.
What would you tell the customer to do next?
I have my list. Replace clogged return, increase cross over trap speed, improve main vent and repair the one bad trap.

Abracadabra

How many burner tubes? Maybe remove one? Is low fire as low as it will go?

Charlie from wmass

I have removed burner tubes in the past. It is just the Tim discourages that die to poor flame geometry. It is a PEG 50 Weil McLain. That is 7 burners. The PEG55 is 8 burners. The boiler uses 2.45 mm orfices. Any thoughts on changing them to 2.0 mm ?