Milling final T-table
What kind of spindle are you using?
What power is your spindle?
4 kW+ 2x 2,2 kW. Chinese spindle fi 100 and fi 80 mm
Nice looking table. I assume it is aluminum?
Bingo;) Yes, the table is made of aluminum 
You will have to be careful about not clamping down too hard on the tracks then. Hopefully you are using some harder aluminum.
@brian_alley I was more commenting on cranking down on the work holding clamps than the spindle force. Some aluminums are softer than others. Not hard to do, I’ve done it myself on aluminum fixture plates.
@brian_alley well, the fixture plate I marred was on my X3 which is a small but real mill not a router