fitting an xwz switch

Hi all. After a recent post about my auto box problem i have purchased a new xwz switch. However i have now found out that to fit it i need land rover tool lrt-44-011 to set the switch in correct position. I've googled it and they are about 70 quid (ouch) for a slotted piece of metal about 3 inches long with a hole in it. Does anyone know if i can set the switch correctly without the tool or is it the only way. Cheers, Steve.