Quoted from Vespula:There's nothing to indicate that they have stopped adding washers and posts improvements. Latest shipments have shown these modification. What you may be referring to is a post of one request made to support for a may build that did not have these changes and they replied to this person due to supply chain issues they can't send parts and go source from Marco or pinball life.
As for the limited warranty, the may GNR manual is very limited compared to nov2020 version last year.
November
JJP’s Limited 90 Day Bumper to Post Warranty
What is covered on the game?
Our Bumper to Post“ Limited Warranty” covers every part in your new Jersey Jack Pinball Machine for 90 days from the date of purchase written on your invoice. The LCD monitor will be covered for 1 year from the date of purchase written on your invoice.
What is not covered? Tax, labor, service calls, loss of income, negligence, misuse, abuse, alteration, modification, rust, warping, damage caused by electrical surge, intrusion of any liquid, fire, theft, acts of God,
improper repair, installation, testing and improper electrical connections, damaged caused by converting game from one region to another.
http://marketing.jerseyjackpinball.com/gnr/GNR_Manual_Nov2020.pdf
May 2021
What is covered on the game?
Our Limited Warranty covers only the items listed below (“Covered Parts”) from the date the machine is shipped to JJP’s authorized distributors
(or directly to the original owner), for the period of time indicated (the “Warranty Period”):
1. Printed circuit boards (game logic). Warranty Period – Sixty (60) Days.
2. LCD monitor. Warranty Period - Two Hundred Seventy (270) Days.
What is not covered on the game?
JJP’s Limited Warranty does not cover anything other than the Covered Parts during the Warranty Period. JJP’s Limited Warranty also does
not cover claims for Covered Parts arising from misuse, abuse, alteration or modification, rust, warping, damage caused by electrical surge, intrusion of any liquid, fire, theft, acts
of God, improper repair, installation, testing and improper electrical connections, or damage caused by converting game from one region to another.
https://marketing.jerseyjackpinball.com/gnr/GNR_Manual_May2021.pdf
Thanks, so it sounds like builds after May still have the extra/improved parts installed.