I have found that runout needs to be close to zero to have the best performance. I use an Ultimate single sided truing stand which is quite nice for rotor truing, and I have the Park disc truing attachment for my TS-2.

Park and others make "forks" for actually bending the roters. You locate the area that needs bent, support it on each side with a fork, and bend the portion that needs it. You can also use adjustable "crescent" wrenches for this. Straighter is better.

In all cases, I clean the tools with alchohol or mineral spirits before touching the rotors. I'f I'm home, I wash my hands well and if I'm on site, I wear gloves to avoid contaminating the rotors.

I think 1mm is way too much runout.