These included various performance improvements along with appearance modifications. Flexibility relates to the capacity to adapt to changes / modifications . The specific roles of many of these modifications in RNA are not fully understood. Also, there are antibodies specific to other modifications. A short period in dry dock for final modifications and improvements followed. Some C variants were upgraded with the new wing modifications. The Churchill had many variations, including many specialised modifications. No further engine modifications were recommended. Those costs include personnel, fuel, maintenance, modifications, and spare parts. Otherwise the wings incorporated the cooling system modifications described below. Manufacturers often counter with safety concerns resulting from unauthorised repairs and modifications. A variety of different modifications can occur. Production based vehicles with unlimited permitted modifications. Since then, it did not receive any major interior modifications or renovations. None of all these modifications eliminates the effect of interference.