cartridge install

I have a Delta 13/14 Series faucet installed in 2011 and need to replace the cartridge but I'm unable to remove the handle cover. The only screw is under a cap on the end which I removed and loosened but the cover over the cartridge is stuck. I don't want to use too much force to remove it or...

Hi, I've got a 2 handle Moen faucet in our bathroom. Moen has sent me the cartridges to replace the current ones. Unfortunately, the handles are stuck and no matter what I try via Moen, they will not give. I've put vinegar around them with no luck. Maybe I'm not putting vinegar in the right...