Centre ring says L = 50
Next ring has the numbers:- 23,39,7,9,17,13.
Next ring:-1,6,20,22,22,2.
Next ring:-28,16,4,3,1510.
Last ring:-5,8,12,10,0,19.
Rings to be turned so lines going into centre ring total 50.
sbrown1450 has probably worked this out now Dave so may feel no need to come back. he just needs to replace the two incorrect numbers in our 'solution'