[mickmate]

There's a lot of welded together rotating components on a car drivetrain. If it spins good by eye it'll be fine. There are fans pulleys and all kinds of parts that are welded and even spot welded together. If there's a lathe handy to true it up on that helps a lot. Windsheild angle should be 45 deg at the centre of the glass. Spend a minute getting that right as it makes a huge difference to the appearance of the car.