[VAL] Rear-end frame droop

["Jim Combs" <jimcombs@xxxxxxxxxxxxxxxxxx>]

I've got a general question regarding frame droop.  

On my '76 31-footer, as it sits, not hooked up, with 
the 4 corner jacks up, both the front and rear sag 
a little bit.  I level it using a level on the floor 
above the axles.  But then, the floor towards the rear 
slopes downward a couple of degrees, as does the 
floor towards the front.  

It's a 30 foot steel ladder frame, supported only in 
the middle.  I figure some sag is inherent.  There is 
no bow in the shell above the axles.  Is this slight 
bit of sag normal, or cause for some concern?  

Jim Combs / '76 Sovereign