Have a new PROPERLY sized Burnham Alpine 150. I have 7 baseboard heating zones of which it does not make sense to "combine" them. Its only been a couple of months since i have had it but because of the micro zones i'm getting average run times of 5-7 minutes. The DHW runs at least 15 minutes so that helps the average a lot. So my questions are: 1. If 5-7 minutes is my average cycle time would you be stressed/concerned? 2. Would anyone realistically spend $1500 to add a buffer tank to add another 10+ min of runtime or is that just throwing money away? 3. I have a 10 year/parts and labor warranty on the alpine so "premature" failure isn't going to be that costly since i'll get a new fan/board for free. Should i just stop obsessing about it and forget about my boiler! Thanks.