I was very careful to install the rotors in their proper sequence in the
housing from whence it came and keeping the front of the rotor facing the
front of the engine.



I was reasonably certain of having the front and center rotors orientated
with respect to each other in phase. But now I'm having second thoughts, as
I'm ready to put the third rotor housing on. Once the rotor is slipped onto
the node of the e-shaft and rotated so all corners of the rotor are within
the confines of the rotor housing is there more than one way for it to fit?

Jay

No,

if the rotor housing fits, you have it right. One tooth off in either
direction and the rotor housing will not go on.

Lynn E. Hanover