Ever since I purchased the 2006 100 it has pulled to the right. Looking back at the dealer records indicates that the previous owner had returned the truck for service for the same problem, but all the dealership did was check the alignment...so as a place to start to figure this issue out - as...
Six months...if there is a vacuum leak somewhere i have not been able to find it. I replaced all the vacuum lines a few months ago with no change. Like you the issue is not stopping power just a soft peddle.
I have the same issue on my 97' 80 series, New Toyota MC- Bled the brakes 6 times, peddle still moves to the floor...slowly when compressed. Brakes function fine, but can't figure why the peddle does not hold pressure.