Bert
I am a big fan of the GSO dobs but when I re commend them I try to point out the issues with lack of instructions.
Upgrading the springs is very easy, just take your time and a bit of common sense. From memory I just left the locking screws in place and unscrewed the collimation bolts, slipped in a the new spring and put it back together. Once you have the strong springs you can remove the locking screws and never let them blight your life again. The reason they are a pain is that onve you have collimated, tightening the locking screws throws it out again so you end up re-collimating using the locking screws!!
The thing to remeber is that a dob is actually a very simple piece of gear, not much to go wrong as long as you are careful.
Cheers
Malcolm