I want to change the head faucet on my 2018 sdx 270. I thought it came with a single knob faucet but it came with a sprayer faucet in case you use the head as a shower. We won’t... I believe the blue plastic water line is standard size pex tubing but want to verify since my 2007 Maxum used 15mm tubing not standard pex. So, the tubing installed for waterlines normal sized and fittings from Lowe’s or Home Depot readily available to fit?