[Brent Deines]

It's very difficult to diagnose this one without seeing it, but I would agree with Barry on this one. If you have a lot of crushed glass and tiny cracks "within" the diameter of the break, it simply is not going to look as good as a simple bullseye or star break when completed.

If you are seeing "no" change in appearance of the small cracks within the break, but the air space around that area is filling properly, then I would also agree with Barry that it is likely there is some damage to the inner layer of glass, but in my experience those types of breaks are somewhat rare.

I have played with the vacuum pumps "brake bleeders" quite a bit over the years and have found them useless for windshield repair. That's just my opinion however, as I know many technicians feel they are of great benefit.

One problem we have here on the windshield repair forum is that a lot of the advice given is system specific. Putting a Delta Kits bridge in the vacuum mode while heating is not going to help. I always recommend following the manufacturer's recommendations for the best results using the particular system you are using.

Some of the biggest challenges we have to overcome in training classes is the fact that some technicians are using techniques that were developed for other windshield repair systems, and simply do not work with a Delta Kits windshield repair system and vice versa.