I would first try a 5 or 6wt line instead of jumping all the way up to a 9wt. Interestingly enough, during the time period when these rods were made, as well as the so-called "production" bamboo rods in this country, 5 and 6wt were the dominant weights being made. This is NOT to say that other weights were not also made; just that 5 and 6wt dominated the production.