Problems pumping up tyres!

If you're only 120 lb you don't need anywhere near 120 psi, even if you are loosing 10 psi (seems a bit much to loose 10 psi) by removing the pump which is hell of a lot you would be fine with 100 psi. I'm a simg over 11 stone and have never had any problems with 90 - 100 psi on 23 mm tyres over 1000's of miles and on 28 mm tyres my pressure is lower still.

I dunno, I just notice that if I can squish my tires very much then it feels like i'm riding with lead in a saddlebag.