Just a quick question for anyone with a Trace Elliot Amp bass amp, could they tell me whether the rear fan is supposed to suck air in or out? I took mine off to clean it then went to put it back on and it sucks air in, and i swear it blew air out! Even though im sure it blew hot air out, the fan will only go back on one way. Cheers for any help!! PS i relise this sounds like a really stupid question!