Never measured pedal travel before so done it now with an average pedal, have several T2s so familiar with how they feel, OK 2mm free play, 2 inches with engine running, (average breaking pressure) 1 inch with no vac, so yours is poor, air in the system, unadjusted rear brakes, siezed front slider pins, what is your HB travel like? you cannot test the load sensing valve, it is located above rear axle near side, there are tell tails on the back plate to the bottom rear, with the HB on push them in and make sure they are free, then with HB off you should not be able push them in if you can, then HB cables are incorrectly adjusted, this can also give extended pedal travel, Rick