Vixen Fluorite Design Question

Group,

Does anyone know if Vixen kept its sourcing of steinheil fluorite doublet lenses from Canon Optron during their entire production run of fluorites - roughly 1985-2003?

I am wondering if a circa 1998 Vixen/Orion 90mm F/9 Fluorite would be up to the quality of the earlier 1980s Vixen/Celestron units?

I have posted this on Cloudynights as well, most folks think they have remained unchanged.

- Shannon

I've star tested a bunch (5+) of the Vixen 102 FL, both the
Celestron and Orion versions. I can't say there was any
clear difference between the versions. All were superb.
I saw one or two of the Orion versions with some very minor
irregularity in the glass melt (i.e. striae or non-homogeneity
in the glass) that showed up in careful testing on an optical
bench, but not enough statistics to say if this is related to
Celestron vs. Orion versions. Would be happy to own any
of them. Very high performance per $$.