It's amazing what you find when you are not looking for it. Spent part of this week looking for 2 small O rings to fix my TY175 carby and not being successful. Yamaha Ripoff PTY LTD wanted about $17.00 for 2 O rings. Tomorrow I was going to bite the bullet and buy them and lo and behold Aldi had box sets of "oil & acid resistant" O rings for $13.00 per 420 pieces box. And guess what, they bloody fit the the bits on the carby and when started did not leak!
So they are now on special at Aldi in both Metric and Inch till next Wednesday, a Bargain!!