Does anyone know how to get the covers off the push rod tubes on the bottom of a 71 super?

Hi dude,you talkin bout the tinware,with a scewdriver,heres a picture of the tin http://www.1800vw.bizhosting.com/0.cooling.tin.htm 

the screws that hold these covers are hard to get at with the motor in the car as they are up near the bell housing . you can easyly remove the ones on the crankcase and the heat exchangers but the other two are a bugger.