Two zerks 180* would probably be even better. Doubt one will hit all the splines.
Basically same thing the 2020 shaft does. May go this route instead of installing zerks and keeping it greased. How many miles you got since putting in the set screw?I installed a set screw as described in this bulletin. Worked perfectly. I was going to install two grease zerks but the yoke has no end cap on slip collar. Grease will just push out. My 18 was out of phase too. I have everything marked for ease of re-assembly.
I went ahead and phased mine today, it was off 1 spline. There were no paint marks on mine either. My 18' had green mark but was still 1 spline off. I took her down the road in 4wd and feels smooth with no vibes. Glad to see they updated front shaft.I didn’t phase the new ones. I guess I should have but the 2020 driveshafts didn’t have Any paint marks on the driveshafts you wouldn’t think you would have to if each shaft was balanced correctly? But it doesn’t have any vibration in 4wheel up to 70 on the rd