HAH! Cheers all the same fella. Biggest offset I've found is some Ritcheys with 48mm, but they cost twice what I paid for the frameset and are therefore a ridiculous proposition, even if they were in budget.
Hadn't thought to look for Chinese Crabon though, so will get stuck in.
Cheers bud! I done did that. Appears to have 45mm offset, unless I'm missing something?