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Wassell's are copies of the Amal carb...even use the same size jets, floats and throttle sliders. The darker slide should be the hard anodized type and should be same in both wassell carbs...so soinds like you've got a standard one on one side.Check for air leaks at carb flange and inlet manifold joints...and check the inlet mani cross over hose for cracks and poor fitting. Spray wd40 or brake cleaner on the joints while idling to see if rpm varies if spray gets drawn in.Do you have a good, thick insulator "gasket" at the kanifold ro head joint? The idle rising could be to heat build up in the carbs making for a lean mixture as fuel heats up.Check if both silencers warm up from cold at about same rate and to same running temp. I recall an old thread where someone chased the weak left side exhaust pulse and turned out the silencer innards had collapsed on that side.
Wassell's are copies of the Amal carb...even use the same size jets, floats and throttle sliders. The darker slide should be the hard anodized type and should be same in both wassell carbs...so soinds like you've got a standard one on one side.
Check for air leaks at carb flange and inlet manifold joints...and check the inlet mani cross over hose for cracks and poor fitting. Spray wd40 or brake cleaner on the joints while idling to see if rpm varies if spray gets drawn in.
Do you have a good, thick insulator "gasket" at the kanifold ro head joint? The idle rising could be to heat build up in the carbs making for a lean mixture as fuel heats up.
Check if both silencers warm up from cold at about same rate and to same running temp. I recall an old thread where someone chased the weak left side exhaust pulse and turned out the silencer innards had collapsed on that side.
