Can anyone lend me some advice?
I've built up my engine and attached my carbs,But when it came to attaching the linkage that I bought it doesn't seem to fit. Can anyone tell me where I'm going wrong? Do I need a different linkage?

You will need to swap around, alter or change to linkage connectors on the carburettor spindles as the centre linkage pulls into the centre of the engine other linkages work the carb butterflies the same was synchronised. Firms like eurocarb and webcon sell the throttle linkage plater.

Eurocarb is my go to place for rods. Never come across a case I couldn`t knock up the exact lengths need. Remember many linkage rods have left and right hand threads.