Why don't you try getting into mediation sessions, (which I think are free).They help you out with working out the financial plans with your ex. This was what my sister did when she and her H decided to go the 'long' waiting route to D in order to save the ££££'s. Having a mediator there really helped my sister get her H both to see reason and to deliver financial information on a more timely basis.
A L should be able to tell you how to get the mediation sessions set up or RELATE.
Saffie me 46 H 46 M in 1986 D20,D18,S16,D13 H's A 01/05 to 07/06 H recommitted to M 07/06 renewed vows 09/06 Going from strength to strength