Thank you for your question. With your current 3-setting cartridge, you will only get flow through one of the showering components. Unfortunately, the right port must be capped in order for the unit to operate correctly. However, if you install a 6-setting cartridge, the handle will rotate all the way around. This will allow you to use both ports, but you will also have additional functions that are redundant or non-working.
6-Setting Cartridge, RP51919:
You may also want to exchange the trim kit for a complete 6-Setting Trim, T11961, so that the indicator marks on the plate match the handle positions.
Date published: 2016-05-05