On my Lambretta uno I have a leaking master cylinder. It's the same bike as the Adly 150 made by Herchee. I went to my standby ebay without any luck. All kinds of master cylinders at a very reasonable prices but none were correct. I started surfing the Internet and found AJ USA. Exploded parts diagram and ordered the part.
Next problem they don't ship to Kansas because of sales tax issues. Had the part shipped to my sister in Georgia. Ebay price on master cylinders around $20 but none were correct placement of the brake line. Ordered the replacement part for $120. and greatful to find it.