Hi there, I am new to Daihatsu and 4x4!

I have an early Sportrak (1989 carb model) and have a few issues and need advice please?

It seems to start fine when cold but when warm takes a while to get going, i have replaced aged plugs and dizzy cap and it doesn't seem to have improved. 3 of the plugs were black and sooty and one was perfect tan colour! Any ideas? Auto choke?

Also i need an upper ball joint as the ns one has a split rubber, as these bits are over £100 per side i was wondering if anyone a) has found a cheaper supplier or b) fitted just a new rubber to the joint?

any help greatly recieved!

Ian