I have a Honneywell Triple

Question

I have a Honneywell Triple Aquasatat Relay insstalled on by boiler that heats both the baseboard and hot water for my residence. The relay is set so that the low kicks on at 180 degrees and the high kicks off at 195 degrees. I have two questions: First when the low kicks on the temperture guage on the boiler continues to go down to about 175 and when the boiler kicks off at 195 the tempurture continues to creap to about 215. Is my system ok (note that the actual reading on the Relay shows my low at 180 and my high at 190. My hot water is not hot for long during winter operation, how high can I go considering the creap of about 15 degrees after kick off.