Suggestion1:

Remove all these:
a=va2 dig 0 ' separate digits
b=va2 dig 1 ' separate digits
c=va2 dig 2 ' separate digits

d=va1 dig 0 ' separate digits
e=va1 dig 1 ' separate digits
f=va1 dig 2 ' separate digits
g=va1 dig 3 ' separate digits

and use this instead:

lcdout $fe,2,"VOLTAGE..",dec va1 dig 3 ,dec va1 dig 2,",",dec va1 dig 1,dec va1 dig 0,"V" 'Show values Line 1 - Voltage
lcdout $fe,$c0,"TEMP.....",dec va2 dig 2,dec va2 dig 1,",",dec va2 dig 0 ,"C" 'Show values Line 2 - Temperature
pause 250 'pause between readings


Good?
Bad?