1995 fld120 conversion.
 

I have a 1995 frieghtliner that I converted to a rv hauler.
Singled the rear axle.
But seems bouncy on the rear. like air ride to soft when pulling my toy hauler .any ideas

You need to build a heavy steel bed. Most of the HDT haulers do that and don't complain of a bouncy ride. There's really nothing you can do about the air ride. Those automatically adjust the ride height so no way to let air off without screwing up the ride height. Do you have new shocks on it? From the research I've done the shocks don't last very long on these rigs.

Shocks are 5 years old .
Will change them out.
Thanks for reply

Shocks
 

This is what i use RoadKing Truck Shocks I called them and they valve a set for me. Worked Real Well no bounce