Delta Q overcharging?

I am wondering those of you with flooded cell batteries what your peak bulk charge voltage is. Last night I ran the new set of batteries and got a bit of a sulfur smell from them so I checked to see what the voltage was and each battery is was at 15.1 volts. I know that for an equalization charge that 15.3 would be ok but at a lower charge rate than 12 amps. The label on the DQ says Lead Acid 36 cell 150-400ah so that should be correct.

Thjat setting is for T1275 Trojans

They like a higher charge voltage? Is there a profile better suited for the US Battery, the AH capacity is fine it is just the initial high voltage. I think spec says they want to be at 14.7 for bulk charge.