For everyone who has problems with their mini-pumps and that sounds like a bunch of you, go buy some "PB Blaster" from most auto parts stores. I had a specialized mini and a Topeak and neither one was working well. I bought some PB Blaster for some other reason and I read on the can that it restores old seals. I figured what the heck I was about to throw the minis away anyways. Shot some in and around the o-rings, left em overnight, wiped off the extra and voila! Great working pump again.
As far as the head problems you guys are having, I can't help you there. I have had no problem with my head. Ask my wife and she'll have a different opinion though!
Later Gator
Boomer
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"Life is not a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside, thoroughly used up, totally worn out, and loudly proclaiming, "WOW, What a Ride!" - unknown
"Your Bike Sucks" - Sky Yaeger