Accurate Reservoir Model?

According to this thread:
the part number for the vex pneumatics reservoir is NCME-0400-X6002.
After digging though many webpages, I found these two pages:
However, the models on both pages do not seem to be accurate as the end caps (where the fittings screw in) are completely solid. As what I’m doing involves stress simulations, this won’t work.

Is there an accurate model available?


Here is a direct link for a valid replacement: