Not much more to using a follow rest. Set the arms so they just touch and re-set them after each cut. Keep the tips lubed and it should go well.
Perhaps make a small test cut at the head and tail and adjust the tail stock based on those measurements. I've determined that my PM1340GT has a misaligned head stock (0.001" of diameter per 6" along the axis) which is very irritating considering the quality boast. I know how to adjust but really dread going though the process.
That is what I'm leaning towards. Skim cut both ends, mic, then adjust to center it up.
Pic of part made with homemade box tool.
If You can not see attachment ,I posted pic of part. 3/8 od turned to 1/8 od times as long as you want.