I now recall a samba thread, recent, where this came up. Was on one of the re-machined TBs (forget name of samba member who does them) and I think it was an error to have hole covered.

alistair

On 2012-07-03, at 9:28 PM, neil n wrote:

> Thank you Alistair.
> 
> As it stands the hole is partially covered, throttle closed. 
> 
> Neil.
> 
> On Tue, Jul 3, 2012 at 4:12 PM, Alistair Bell <albell@shaw.ca> wrote:
> I think not Neil. I believe the hole remains clear when throttle plate closed.
> 
> But as in all things, I'm open to correction :)
> 
> alistair
>