When you say the tag does not lift, exactly what do you mean? The tags on our vintage Newells don't actually lift off the ground. The release switch on lets the pressure out of the tag air bags, which just reduces the weight on the tag wheels. When I play with the switch, I don't really see the back end move up or down. I think when you release air from the tag air bags the height leveling valve simply compensates for it and adds air to the rear wheels to keep the coach level.
I'm in Fort Worth if you want me to look at it sometime. PM me with contact info.
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Richard Rhonda Ty and Alex Entrekin
1995 Newell # 390 DD Series 60, Allison World Trans
Subaru Outback toad
CoMotion Tandem
Often wrong, but seldom in doubt
Rhonda's chronicle https://wersquared.wordpress.com/
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