Fitting/Bending Replacement fuel lines

[Gnasher]

My reason for replacement are:
a) I have sprung a leak on the hose from fuel pump to carbs.
b) Fuel lines are getting on a bit (they're a bit stiff) and due to me wrestling them on and off the fuel filter a few times, they have slight damage at the connection.

Okay.  Them being stiff isn't really a problem as long as they don't leak.  They also rarely need to be handled, careful application of a hairdryer will help soften them

The line that's got a leak can be repaired, cut the line where the split/hole is and insert a fuel joiner something along these lines
https://www.ebay.co.uk/itm/131229827851? or an elbow to get around bends https://www.ebay.co.uk/itm/363181899217?