Front end bouncing

Dirtybrown, do you own the truck?

 

Seems that an owner is always chasing three things: shimmies and shakes, electrical problems, and air leaks. Don't let your potential alignment problem go, get it fixed. It can quickly cascade into more serious issues, causing stress on other parts, not to mention the need to likely replace your steers.

Get handy with a spray bottle with water and a splash of dish washing detergent. Spray your hose connections or air bags, etc to find bubbling leaks. Learn how to fix those yourself to save major coin.

A wire stripper/crimper tool, with butt connectors, and an electric probe are handy for locating and fixing electrical issues.

Welcome to the never ending chase.

 

I'll let someone better informed answer this, but did the bouncing start right after your modification?

I've never heard of needing to raise the ride height to accommodate heavy trailers. I thought the air bags will adjust on their own. Did you do that because of any issues the way it was set up before?

 

Doc said, you gonna die.

 

I've got a Columbia at work, when I got it , it could get bouncy when I was over around 60k, I noticed after a couple times weighing that weight NEVER went to the steers. Empty, Loaded, Bobtail, didn't matter. Too much always sat on the drives and if I hit a bump the momentum would feed off itself. Moved the 5th wheel up about half way (was all the way back) and never had it bounce again. Prob not your prob but if it's way back I'd load yourself heavy and try to find your balance point.

 

note; Lepton said 'move the 5th wheel forward'; you say it is moved to the back.

Moved to the back takes weight off the steers.