Hey thanks "Fireman", I'm thinking of going that route
myself. I work in a fab shop with a full machine shop
set-up so I think i'll get my buddy to bore the TB out
for me & buy the new 52mm plates. How long did it
take them to do yours?
Cheers...

 

Took them like a week or so to bore it out and install the blades.

 

What do you gain from a 48 to 52 big difference??