power steering prob
 

ive had to look at my power steering today as it was low so i topped it up but went low again. ive checked and ive got a leak,it looks like its coming from the bottom of the reservoir. ive took it off and the O ring at the bottom looks ok but theres no gasket connecting it to the pump, is there suppose to be one as if so then thats my problem

by the way my cars a 93wrx but with a 94wrx closed deck block (dont know if that makes a difference)
cheers craig

any help should it have a gasket or not? otherwise the leak could be somewhere else
craig