Yes I have alot of experience with these and actually just sold my 95 LWB just yesterday.
Do you have a County(Classic/LWB) or a 4.0SE? Both were made in 1995.
If you have a County, you can flip the switch off under the passenger's seat. This will lock the air suspension in place and will keep it from self-leveling. Once you have done this, let it sit overnight. If it leans heavily on one corner, generally a bag is leaking. I don't think valve block leakage is usually a problem. Although one thing it could also be is leakage from the 0-rings where the air hose enters the bag.
If you have a County, a coil spring conversion kit is available for $350.00
I have watched many people poar thousands of dollars into the EAS system and end up converting to coils in the end anyhow.
If one bag is dry-rotted and leaking, they all probably are. $300 each for bags, $900 for the valve block, $900 for the compressor, $150 for the dryer....you get the picture.
If you have a 4.0SE, it does not have this under the passenger seat switch, but you can do the same thing by leaving the tailgate open. Also a coil kit is NOT available for the 4.0/4.6's.
Keeping the EAS working at higher mileage is a constant battle.
Hope this helps,
Feel free to e-mail me with any more questions.
nickshu@yahoo.com
Nick.
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Nick Shumaker
1982 911SC Coupe
nickshu@yahoo.com