I have an injector question but before I start this is not intended to bash any manufacturer in any way so please refrain from doing so. I have a 6 oz Basstackle injector and love it but I seem to have difficulty with an approximately 1 inch plastic plug at the end of the injection cycle i.e. I'll inject 4 multi cavity molds and when done I cannot purge anymore plastic from the injector, when I take the tip off there is a 1 inch pug of plastic left in the tube, I do cycle the injector before my 1st shot and it seems to occur from the beginning through to the end no matter how hot the molds and injector get. So I guess what I'm asking is is there something that I'm not doing to assist in this or is this pretty much the norm?