Update: Shop has aligned front end which was out. But main issue was the kingpins. They had play but still within tolerance. But, they were very in need of greasing.
Apparently the F53 needs to be off the ground and no pressure on kingpins in order for them to take the grease. Approximately a tube of grease went in each kingpin after off the ground.
It appears the RV shop that has been doing my oil and lube jobs doesn't know this. I will call and express my thoughts on that with them but will not return. U would think an RV shop would at least have qualified people to work on ur unit. Or they should be reviewing a service manual.
Just thought I'd share what I have learned. Thx, Dennis.
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