Got my new to me RM over the weekend. Had to free up the valve using rust penetrant and it now moves freely. When you're applying the anti seize to the shaft do you just apply it to both "ends" of the flapper shaft or work it into where the shaft passes through the muffler tube housing? The spring tension seems high so I'm looking to replace it with a lighter one. Have to figure where it can be sourced. Any ideas? TIA.
I have played with that valve a bit, removed the spring, tried a different spring, wired it into the open position, none of these things improved it. Abarth got it right in the first place. It really is very good as is.