A few ideas:

[turbguy]

I think you might want to evaluate the impact of increased MASS using the extended Cartridges. This will have some impact on carriage accelleration.

 

[BOYNTONSTU]

I think you might want to evaluate the impact of increased MASS using the extended Cartridges. This will have some impact on carriage accelleration.

These Brother printers have fixed position cartridges.

Mine is a Brother MFC-210C.

I believe that many Canon and Brother MFC printers use non-moving cartridges.