Starting problems on VW polo coupe parade 1994 M reg

Hi There, My Polo has started and run fine for 18 months but recently is becoming more difficult to start especially if left standing for 2 days or more without being run. I dont think it is an engine problem as when warmed up it runs and idles okay. also it restarts fine after being run. Battery is good too. The problem is getting worse now and often takes me 5 to 10 minutes to get going, then it stalls at traffic lights.. until the engine is thoroughly warmed up it seems. It seems like a fuel blockage? as there is a delay when i press the accelerator pedal, i read somewhere that some polos have dodgy ignition barrels ( whatever they are? ) The car is low mileage and has been super reliable up to now, any help or ideas would be much appreciated. Thanks! Regards Tom