Apparently I am the only one on the planet that needs twelve pushrod shroud tubes and am still waiting for them to arrive. But, I got the two new pushrods today, but I needed to check to make sure they were actually longer than the old ones. I didn't have a micrometer that would measure that length, so I clamped two nmachined blocks to my lathe bed and matched the spacing the same as the new pushrod. I then took an old pushrod and used a feeler gage to measure the difference in length. I confirmed it was the next size up and fit perfectly.