utica oil boiler question

Everybody I have a Utica boiler and I'm running a triple stack aquastat but want to change it out to a high temp only because I removed the domestic water also the relay is sticking so I need to replace it anyway! This is a two zone system and the second zone is working any tips? Thanks

You might be more likely to get an answer on heatinghelp.com. That bulletin board is focused on non-wood burning heating appliances, and has a section devoted to oil burning equipment.