Curing a leak from the BSA A7 / A10 rocker box can be a tricky job. We have designed a new one piece gaskets that helps with keeping the gaskets in place as the rocker box and pushrods are engaged. The gasket is also made from a superior "Flexoid" material. http://shop.srmclassicbikes.com/product/one-piece-rocker-box-gasket-a7-a...