Hi norm
from what I have read, I don't think there is a difference between Bob's Knobs and the knobs from astronomy-shoppe.com. I believe that Bintel are now stocking Bob's Knobs.
Astonomy-shoppe does have "rescue" kits - so you can choose which one you get. I got
Resuce Kit which contains Primary and Secondary Collimation Screws, & Springs.
There is also the
Complete Rescue Kit: which contains the LB Collimation Screws, Springs, & Azimuth Knob, but so far I am finding the Azimuth Knob that comes with the Lightbridge OK, so not sure what the Azimuth Knob fromthe rescue kit actually offers you- perhaps someone cna elaborate.
I'll do a search on 'transit cases' and see what comes up - thanks
Cheers
Martin