I posted a few days ago regarding the Moen kitchen faucet I bought for my new kitchen sink. Now that I am about ready to install the sink and faucet, I see that the copper supply tubes are bent at a 90-deg angle towards the front. The sink has a larger left tub than the right tub, and the left tub extends further to the back so that the faucet installs offset to the right so that the faucet supply tubes are not aligned with the divider between tubs. That means that the faucet cannot be installed with the tubes bent forward. I need the tubes to be bent straight down to be able to install the faucet.

I know that the tubes can be bent, but also that it is easy enough to kink them when bending. Any tips for bending without kinking?