adjust the ride height to get the shafts level - move ur shocks around on the various mounts etc. some people, i think, have even limited the down travel of the shocks with a small piece of fuel line inside the shock on the shaft, to help get the shafts right.
A 2mm length of fuel hose where? between the end of the dogbone, and the inside of the diff cup?
u got it mate, inside the actual cups, it seems to stop the shaft moving about in the cups too much and binding, which breaks the cups. speaking of which, i used 10mm compression fittings/olives on mine, i had to cut a little out of the arms for clearance, along with a bit of the shock tower, pics in my sig i think. dunno how it compares strength wise to ur method, but i havent had one break yet, but then i only use the cups on the rally setup.
worth getting ur lad interested in cameras tho mate! kids are fearless and will get some great shots! its just when they drop the cam... lol. sounds like u drive pretty similar to me! i am on the lookout for a quarry or something round here to give this new engine a good workout. a guy within an hour of me also has a .28 in his funfactor, also a guy across the road from me has a lst too, that would make a good vid, will see what i can do too.
lookin forward to ur vid, i got running in to do...