I know the subject has been discussed before but I cannot find the original thread using the search (don t

too hard please), anybody would have any document reference/ any experience on the impact of the IP increasing at depth on the solenoid (damage ?) and / or the ADV (Free Flow?) ? and on a detailed procedure on how to modify a DS4 into a US4 ?
All my OC regs are APEKS with DS4 or FST first stages and I m about to order a meg

, I would just like to know if I can use these without problem or if I can/have to modify them

.