1971 350SL fuel pump fuel rubber hoses on the injectors

Hello everybody,
I had a leaking DJet pump. It was leaking from the area that I coud not fix. So I found another pump of the same type that was leaking from the top o-rings.   Opened it, cleaned it, replaced both o-rings and tested it. Now it does not leak and it works correctly. The only question is, do I have to put some Loctite on 4 screws when assembling the pump ? The original pump has some yellow paint on the screws... Is this only colour? Or some Loctite stuff?
If I want to change small rubber hoses on the injectors - do I have to glue them to injectors or how can I do that ?
Thank you & Best regards.
Jarni

Hi Jarni,
it is only paint on the screws of pump.
Fuel hose replacement on injectors is decribed ich chapter 5.3 of my compendium.

Hi,
so, should I put some paint on the screws again? To stop them from unwinding?
Thank you