I bought a new jigs today and the pinching guide block are burning the temper out of the blade. I understand that I had them too tight and now they are looser. But how far from the blade should they be? How are they to guide the blade if they are not in contact with the blade? Are they meant to burn the back of the blade?
What to do, what to do? Please advise.

set the pendulum to the forward position, so green switch is as far forward as possible.
tighten carbide guides so they pinch the blade. now with jigsaw upside down, push the bade forward with your thumb, as you push on the blade, slightly release the guides with the allen key provided, until the blade comes free.
your now set up, dont forget to re-set pendulum for straight/curved cuts.
there is a video on this on my previous threads as i had teething probs also..

Here are the instructions and video for your convenience.

- Unplug the power from the jigsaw, always follow the safety instructions in your product's manual
- Insert the jigsaw blade using the FastFix mechanism
- While holding the blade, carefully pull down on the blade to bring it to the lowest point in the pendulum action
- Move the pendulum setting to its #3 setting which is closest to the front of the saw
- Remove the wrench from the rear of the jigsaw base plate
- Using the wrench, tighten the hex nut in a clockwise direction until it is fully tightened against the blade
- While pushing gently against the blade with your thumb, use the wrench in a counter-clockwise direction to loosen the hex nut until the blade slips free from the carbide jaws

This will give set tension on the jaws which will minimize deflection and also minimize wear on the blade.

How to set the carbide jaws for a Festool Trion jigsaw