I'm looking for a strong pump for touring that I will be able to inflate 700 x 28 tires to 100 psi. The pumps I've had (usually Giant) take them to only around 70. I've got adapters for both wheels so that I can access gas station pumps when they are available, but when I'm in an isolated area and have to repair a flat, I pump to 70 and then top them off with CO2. Anyone know of a strong lightweight pump that will get them to around 100?