Be careful with fomatone mg as they have recently changed the emulsion and many are saying it does not lith as well as it used to. The only true lith papers currently being produced are the slavich, although if you can get hold of some older foma stock it will be fine.
It looks like youre using quite a lot of dev there, is that intentional? When I mix up I tend to use 15ml a, 15ml b, 30 old brown and 540ml water. Remember that dev dilution can have an effect on colour also.
If youre on facebook find the lith group. Although it was only recently established theres now a wealth of people who are joined, including wolfgang moersch and tim rudman-anything they dont know isnt qorth knowing