"C-Systems/AVT have not managed their new product introductions well"
Admitted.
We design pumps for industrial / OEM use, and where clearly given wrong info for CSP750 model.
However I believe the MAG is be a very good unit, with very low failure rate.
I get almost no email, and in most cases email is of the "can I" type.
The "soft" shafts showed up in OEM units, long before retail units, so there is some assitance in sharing OEM / retail components.
We have been OEM only company now for some time, and this is working very well. Our clients give us great feed back, and have a higher understanding of customers needs
Just wish we could convince more to offer there products to DIY guys. We make some very good other units that would also fit your needs, well.