I guess I still have a question regarding the whine, which is less noticeable now, but still there when the system is fully warmed up, and the lifting actuator doesn't want to lift. This is occuring even when I'm not on a hill now. I never noticed a problem until I was on that steep slope, but now the lifting is sluggish and the whining is there when the hyd system gets fully warmed up. Everything seems fine when cold. Does anyone think that heavier oil for the summer might make that better? Would 30 weight work better, but cause foaming? Do I have a pump issue? -I imagine that will be a bear to access, repair, and pay for! <!-- s:( --><img src="{SMILIES_PATH}/icon_sad.gif" alt=":(" title="Sad" /><!-- s:( --> 
I'm hoping to get more information from John about a standpipe kit, which will give me more Hydraulic fluid capacity, but not sure about the availability after all these years. 
This begs another question.... When I was on that steep slope, and apparently starved the hyd pump of fluid, did I do something to the transmission, too? -Or will it equalize between the chambers of the trans case when the tractor levels out. 
I don't normally have to work on a steep slope like that, but I need to get back into that area occasionally, and mow as I go. 
Any thoughts on that left brake that's not working to well? The pedal doesn't travel any farther than the right one, but I have to use it awhile to get much braking on that side. -Am I getting oil on the brake, and how easy is it to clean up and fix? 
Thanks!