Need a D4 front gearbox

[Si Coe]

Broke the housing where the shock tower attached to the gearbox upper. Ordered a new one from Apex, who of course claim its in stock, but its been a week and I've not received it, so I know what that means. They haven't really got one at all!
And I'm fairly sure thats the case, because a check of the people whos stock levels actually are accurate suggest none of them have one either.

Which leaves me with a D4 I can't run on Sunday at Southport, and no idea when I can get it going again.

So does anyone know a shop that 100% certainly does have a D4 front gearbox in stock - HB61420 is the code - ideally in the north west? Or better still does some nice person who'd be racing on Sunday in the Southport regional have one?