Hi. I'm going to connect 12dbi can-antenna(with LMR400 cable) to WRT54G v4. Which port(ANT1 or ANT2) would be better for preventing signal loss. Ant2 has short cable and ANT1 don't have. (on DD-WRT v23 sp2, TX RX mode to Right or Left) Also, I'm going to change transmit power only after upgrading dd-wrt v23 sp2 firmware. which chipset do I need to install heatsink, Arrow 1,2 or 3?