Barry,
I sourced a set of GSP drive shafts (a company in qld I believe) - $175 each for mine. Very happy with them so far, have copped a flogging with the EJ, the RHS is clicking and the LHS needs a boot replaced. Both will cop a re-packing later next week when I get some other parts (bearings all round).
Its now cheaper to buy new aftermarket units - NOT from ebay - than to have your old ones rebuilt!
As for your situation, I'd say re pack them and replace the boots - they're really not difficult to do, just messy while you're trying to work it out. I've taken to using a hose clamp instead of that dodgy ring strap they supply with the boot kit. To make the hose clamp hold onto the boot I also punch a hole in the centre of the clamping strap at about every inch until I get to the section of teeth that I think I'll need to use. Punch from the outside in, this creates a dent with "teeth" for the clamp to bite into the rubber, thus not allowing it to fall off. I've done this to Sunnie the Brumby (on the car too!) and Ruby Scoo will get the same treatment with the next lot of work done - this will really test out the hose clamp idea.
The only boot you can't do this to (on the L series) is the outer clamp of the front outter boots as it won't clear the front hub when it spins...
Cheers
Bennie