the only memory problem i have had is with one of my old nikkos when i didnt completely drain them

if you have a NiCd glow start: put a little light bulb in the end to drain the battery, then recharge it

for NiCd transmitter: leave it on overnight to flatten he battery

for NiCd RX battery: same as the TX, leave it on overnight

oh coarse, if you have NiMh batteries you can just top them up the night before you go