Windshield Repair Forum

Hi all,
I have the most trouble with combination breaks. I have difficulty getting ALL legs filled properly. I have tried flexing with the probe, lighten up on the pressure in contact and slight heat from inside. I try to probe out the impact point hint maybe there is some blockage. Any tricks to share?
Thanks in advance for your help.

A picture would be a great help, without it I am struggling to understand the problem. Would be glad to help.