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Cat 215 lc excavator no power to boom or bucket or right track

Normally we can service and fix all of our equipment with no problems. However, I ran into an issue that seems beyond me. I have the operators and repair manuals for this machine. There are 2 safety valves on the boom cylinders that are not in the manuals as well as some extra plumbing and valves. We have pilot pressure but no right stick/control power.

 

The excavator runs and we can hear the hydraulics on the boom and bucket wanting to do something but we have no power to either as well as the right track. I can not be sure if it is a problem with the crossover valave or summing valve or the prv or what. If anyone has a solution or a suggestion where to begin it would be greatly appreciated.