I have an Eagle 525 amplifier. It is 2 x 42kn6 (modified) driving 5 x 20LF6 tubes. I am driving it with 2.5 watt DK and 18 watts swing and seeing 225dk and about 700 watts pep. Does this seem to be about normal? Also- I notice that the stock fan(loud) is pulling air out across the tubes vs blowing air in across the tubes. Is this normal? Last is I replaced the 115v 60hz 14 watt fan with a much quieter 115v 60hz 20 watt fan. Is that ok on the wattage difference? I am most interested in the air flow direction? Thanks