well tonight after much tinkering, see other threads! i cleaned the exterior of the injector pump using Wynns injector/carburettor cleaner, soaked it liberally then used the same cleaner to power washed it off as it is very powerful spray, let it dry then soaked in WD. The throttle is now so much free'er and responsive, cantbelieve how much gunk it cleaned out of all the nooks and crannies. Would recommend it. not sure about WD so gonna oil it all with 3in1 tomorrow
