If Steady wants to try something different with RR at home, then move Chris to 2.
1 Jack RR
2 Chris
3 Leon
4 Anders
5 Josh
It frees Chris up to do heat 13 and also means he can ride with Josh three times.
For Example,
Ht 1 Chris-Leon
Ht 6 Chris-Anders
Ht 10 Chris-Josh
Ht 13 Chris-Josh
Ht 15 Chris-Josh
It would mean pairing Leon and Anders but they score enough at home to cope reasonably well.