OK! Well after speaking with Anthony at Bintel, I bit the bullet and simply unscrewed the two dovetail bars, swapped them over and screwed them back on. A 5 minute job which now has the finderscope above the RC8 and not below it!!
Hopefully I've tightened everything up as before so that I haven't introduced flexure into my system.
Time will tell...
Cheers,
Mario