If itīs the gasket you can always search google for ego solenoid gasket
but i already did that for you and the first one it showed was that paintballgateway has them.
To get to the gasket you have to take apart your frame,disconnect your wires from board first,then after that you can take the solenoid of with an allen key(2 screws ). Best to check your manual. The manual is really helpful and it is well written with great picīs so you can see what to do
If you donīt have the manual anywhere i am sure you can find it somewhere on the eclipse website
Hope it helps, good luck.