I have a couple questions regarding my 165,since I sealed my dhw plate my water usage has gone to bout nil,which is a good thing but when I do add it wants to overflow around the plate where the copper lines come thru I left those open,just covered with insulation.I watched the other day as the water got back to temp just before the blower kicked off it started overflowing,I have a piece of curved rubbber hose coming off the overflow pipe I just removed it and let it flow there til the level was down enogh to put the hose back on.Also I noticed steam out the overflow,is that the norm?It doesnt steam all the time,could it just be a hot spot,I noticed it only in the morn after an all night burn,I have my ranko set at 160 off at 163 itll creep to the mid 170s though.And one more ? regarding my indoor tstat,when my fan kicks on itll run for 30 min or longer,it kicks on at 67 and off at 71 Id like to have a tighter swing like 2 deg,but I cant with the cheap slider.I guess what Im asking is should the fan cycle off and on continually or is that long of a cycle bad for the fan?Thanks