@vair68robert
Looks like at least one 25W resistor on each board. That 2 Ohm on the coax board could be replaced with parallel 4 ohm Mills MRA-12s. That would yield a 24W rating. Close enough, I think. The CS2.4 has a 30 ohm resistor on its coax board. Tom had me use parallel 60 ohm for more surface area and improved thermal management. I bought mine from Sonic Craft. Had to mix and match from the older Mills and newer Vishay Mills to get the proper values at each position. Mine are all 12W versions, OEM sandcasts were 10W, so I gained a spot of headroom.