I think there's a mistake in the new kit, probably because ePBT's row numbering (443211) is reversed from GMK's (112344). Where the old GMK kit had an R3 PgUp and R4 PgDn to support 65% layouts like the Tada68, the new ePBT kit would need an R2 PgUp and R1 PgDn to achieve the same goal, but the new ePBT kit has an R3 PgUp and R4 PgDn, which doesn't make any sense. It looks like they were just moved over to the new kit without factoring in the reversed row numbering. You probably want to drop the R3 PgUp/R4 PgDn and replace them with R2 PgUp/R1 PgDn.