Never tried BSA’s but agree with you I.D. on the smell of Castrol R.
Did some pre 1970’s bike racing in the States with a good friend who got pretty badly injured. We would have carried on if it wasn’t for that. Kinda miss it now. He would go back on one tomorrow if he could. As you say Cookeye, it’s such a friendly way of racing.
Hit it, hit it good.