Forgot to add, not all brake pipe clips fit the holes they're supposed to go into (or vice versa).
The front brake pipes have two
EDP7037L one-way clips - one on top of the RH chassis leg and one on top of the LH chassis leg.
Both of the original clips on mine had split across the base so I bought two new ones. Both new clips fitted the LH hole perfectly but neither of them fitted the RH hole - they're not big enough to lock in. So one hole is bigger than the other, even though they're supposed to be the same dameter.