Can't seem to achieve proper set points on aquastat in hydronic system

I'll try to be as concise, yet as thorough as possible. So here's the current setup; -Weil-McClain gas boiler GV5 series-1, 140K BTU, set for 140-180degree -Approx 2300sqft living space -Zone 1 (baseboard pipes, first floor) -Zone 2 (supplies heat exchanger in attic that provides forced warm air to 1st and 2nd floor) -Aquastat on air handler (Honeywell L6006A) controlling fan but it seems not the circulator Aquastat set at approx 165 with 7ish degree differential