Try this-- UNTESTED
Code:
start:

'look at switches on Port A
IF (switchCW = 1) and (switchCCW = 1) then
GOTO HOME
ELSE
GOTO LOOP
ENDIF
GOTO start

HOME:
Position = 150
Pulsout servo, Position
pause 18
GOTO start

loop:
if SwitchCW = 0 then
Position = 130
Pulsout servo, Position
Pause 18
endif

If SwitchCCW = 0 then
Position = 170
pulsout servo, Position
Pause 18
endif

Pause 18
Goto loop