Self leveling suspension adjustments

[Fltrplntman@domain.elided]

 Here's an odd ball request for everyone. Does anyone know how to, or have 
any information on, adjusting the height of the self leveling suspension on 
an 88 Milano Platinum (W/ an automatic, silly!)  Personally, I think the 
system is set WAY too high. When it sits idle for a few days ( the system 
bleeds off after a few hours) , it will pump up quickly and the rear will 
raise up to 4-5 inches.It rides kinda stiff, but I accept that. After all, it 
is hydraulic. I was just wondering if I could adjust the proportioning valve 
linkage to reduce the height and smooth out the ride a little bit. It almost 
seems to be riding at the top of the struts. ( fully extended).It bounces on 
the tires on larger bumps.
         And finally, has anyone found a source to repair the proprotioning 
valves. Mine drips a little. 
Tim Timko  

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