Problems with new Moen shower cartridge

[Jeff+]

I would welcome advice on the below 2 issues related to my recent installation of a new Moen 1222 cartridge in my single handle shower knob, which is tear-shaped. I have very limited plumbing skills so would appreciate simple advice, thanks!

1. The bottom of the tear is at the 6 o'clock position when the water is off. The water is hottest at the 3 o'clock position. The pressure is strongest and the temperature is warm at 12 o'clock. When moving to the final position at 9 o'clock, the temperature is cold and the pressure drops. Please see the photos but I placed the cartridge so the HC portion is on the top. Should I just turn the cartridge to go from cold to hot water when i turn from 6 to 9 o'clock? Also, why is the pressure greatest at 12 instead of 9 o'clock?

2. Since changing the cartridge, there is a very slow leak from the tub spout. Any thoughts on what I have done wrong? There was no leak before I changed the cartridge.

Thank you,
Jeff

 

[Terry]

When hot is piped to the left side, the H would be on the left. With cold piped to the left, the cartridge should be installed 180 degrees from that. Flip the cartridge, you're almost there.

Off is in the down position for the handle.

 

[Sponsor]

 

[Jadnashua]

When full hot or full cold, you're only getting water flow from the one pipe. Anywhere in between, you're mixing some hot and cold, so midway (warm) would likely produce the highest flow.

A thermostatically controlled valve works a bit differently in most cases, and the flow may be more consistent across temperature change, but will still vary some, just not as much.