Hi Doram, I contacted the shop I bought this machine from and they confirmed that it will not void my warranty. They also said this
"While the process of adjusting the OPV will not directly void your warranty, I do want to express my concern that running the machine at a different setting from the stock standard setting, can affect the longevity and integrity of not only the internal components, but the entire machine itself. The entire casing of this unit will need to be removed to adjust the OPV and doing this alone can be tricky and affect the integrity of the internal components, we just do not like recommending removing the casing or performing this procedure to the end users that are not experienced machine technicians.
Would you say that was accurate, please?