Bravo 1 drive trim leaking. Need help.
 

I got an 88 checkmate with a bravo 1 outdrive. My fluid has been disappearing out of the resevoir and the drive wont come all the way up. The weird thing is that I cant see any fluid leaking out of the pump or the lines to the drive. The drive rams are dry also. Can this problem be leaking in the drive somewhere? Any help or sugg. would be appreciated. Thanks
Danny