[B and C]

Slide pin on PS bedroom slide is spraying hyd oil onto slide top when any of the slides are activated.  It eventually stops after setting for a while.  I assume once the pump stops running and pressure equalizes in the system is why it stops..  It looks like there are two allen-head bolts..one on each side of the pin block.  i would like to check the tightness but am having trouble getting the valance off to get to them...any suggestions?  Also, if I can't get the valance off, can I de-energize the hyd solenoid and will that keep pressure off the pin?  
Thanks!