Hitachi SBC 32 carb rack taken off of 1982 Yamaha XJ750J Maxim Carbs were rebuilt 2 1/2ya at Redline Motorsports, Bismarck. I imagine they could/should be sprayed out. SBC 32 carbs were used on all 81-84 non-turbo XJ650, 81-84 XJ750 and XJ700's. The other Maxims used Minuki.
Message Martin with your cell# and we'll send pics.