The Other Mike wrote:

On Tue, 9 Jul 2013 09:26:13 +0100,
(D.M. Procida) wrote:

I think it's easy enough to get inserts or helicoil-type devices for
left-hand threads,

If you think that they are easy to get then please enlighten us all with a
link or even just the name of a supplier or manufacturer.

Haven't you just done that below?

Pedal repair kits are here, that is assuming you have 9/16" 20 tpi threads

http://www.recoilshop.net/91620-rhlh-bicycle-p-754.html
http://www.recoilshop.net/91620-bicy...ack-p-766.html
http://www.recoilshop.net/91620-bicy...ack-p-767.html

Daniele