cool i was right, thanks! and by triangular i was talking about how the valve springs in the photo the middle one appears to be offset more towards the fulcrum of the rockers, as opposed to the model where they are all inline. if you look at the photo and look at pistons 2&3 from the right you can see what it is im talking about.
the photo appears to be like this
F----S
F--S
F----S
while the model is all inline
F----S
F----S
F----S
but one more thing i noticed is that the 3d model seems to be missing some valve stems.
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