No problem,

Is this not the perfect match for what your looking for: https://reprapworld.co.uk/products/...GT2 pulley (40 teeth / 9 mm belt / 8 mm ID)

£8.20 all in but only 19 in stock so you better be quick lol

And you do know someone with a lathe who can bore things for you, you have hundreds of members on this forum with lathes ready to help other members for a little bit of bear money, just put a RFQ up when you need one, see link:

Projects, Jobs & Requests
Do you need a part making, are you looking to start a project, please make your request for a quote in here.