series 2 rs turbo

Problems with the car caused me to buy a new set of injectors (last October
methinks). Checked the spray pattern when I put them in as a prior set of nos injectors were a bag o s---.
All seemed fine.
Car still causing problems so only started now and again and never left garage.
Now we have one of the new injectors spraying nowt and two others leaking.
Replaced the non working one.. all spraying ok now but two still dripping.

Every time I take the injectors out to see what they are doing and put them back in, the car starts and runs fine.
Leave it overnight and it won't start worth a monkeys, I'm assuming because of all the excess fuel from the leaking injectors?

Could the fuel distributor be causing this problem, already swapped out four that are knackered and only one spare left.

The fuel pump, fuel filter, pressure regulator are all new as is every sensor on the engine.

This driving me nuts as it's had new everything I can think of thrown at it
and still the soddin thing defies all logic