Yes, there is a clamp holding the steering column like yours.
So yes, I have movement in our MH steering shaft. As you said, the steering is not effected, but there is considerable steering wheel shaking. The rougher the road the more pronounced the shaking. I smoke and have had a cigarette jarred right out of my hand. I had my mechanic look it over, and everything seems to be OK, it is just something inherent to the Chevy truck chassis of that era.
Berniece & Russell with LilBit a Netherland Dwarf rabbit
1987 Southwind, 1995 Ford F150 Supercab 4X4 toad
Life in the fast lane? No thanks! We will stop and smell the flowers at every chance.