I recently had a rheem prestige modulating furnace, RGFD series, 60k [1500 sqft. very tight and well ins. house], and 400series t- stat installed. Works great but seems to cycle very frequently and short. I realize it's cold out but cylcle seems too short. Changed anticipator setting from FA .6 to SL 1.2, no change. Since the t-stat does not read in tenths it's hard to tell exactly what or when it's going to do something. T stat setpoint will be 70 and room temp 70 and furnace kicks on. Turns off short time later, room temp still 70. Now I'm not complaining about that, it is the most comfy the house has ever been, but with a 1.2 diff shouldn't it at least go to 69? Just a little concerned that some eff. is being lost, and am not that fussy about 1 deg or so off setpoint.