Mi2 stainless steel screws?

[Sumilidon]

Hello,

So rather than fail with an HT 1, I have went for a Schumacher Mi2 to start with (abundance of parts new and second hand very very cheap)

Chassis is bought, but it's been raced outside so I plan a full strip and clean of the car. As such, I may as well change the screws to something more rugged.

Anyone aware of any conversion kits within the uk?

Also what pitch pinion wheels would I need for a standard spur?