they are improved in a few ways, readjusted wiring, some where showing higher ohms in old batch even though they performed the same as ones that read with the proper ohms, thats been adjusted so it shows proper readings
throughout.
the coil area inside has been looked at more carefully during building, they had a man on each lane watching and checking, i have video of this, this was not done before, they had 1 person for the whole production, thats been improved.
they also kept a closer eye on the tubing to alleviate any crack and ditch any they found, there will always be a few that slip in, it seems this has been improved as well as im not finding many at all as i mentioned above, they saw comments and kept an eye on them.
these now all have the new cone for better seal and thats a improvement, and over all they seem to be performing rather spectacularly.