MOT Failure

My 1987 280GE LWB petrol failed MOT today not unexpectedly Lost of advisories and some easy fail points but main ones were nearside and offside track-rod end ball joints excessive play. Dust covers split so no grease about. Nearside back spring broke. Any thoughts on sourcing bits. In addition engine idle high so emission failed test. Co actually 5234 with limit of 3500 HC was 199 with limit of 1200 so passed that bit. I tweaked the "white" knob to lower idle RPM on a warm engine to about 800 RPM but at that it stalled so increased it a bit. Any thoughts Cheers Gary

ps posted also on wheels suspension and brakes as not sure which was best