As above try to keep it amicable and the csa out. Best solution.
Stop doing any overtime immediately until the csa have sorted any payments, then do as much as you want.
Never, ever, give the ex cash, keep it all traceable(standing orders/ bank transfers) to show the csa.
If you do sleep on a mates sofa get a rent book etc.(for show) to show your living expenses. Informal arrangements aren't acknowledged.
Keep all receipts, fuel/bus/train tickets when you go to meet the kids, and for anything like school uniforms/school trips that you pay for.
They'll re-evaluate your circumstances every two years. They'll demand to know what any future partners you live with earn, cheeky b*stards tried it with me saying my girlfriend could support me. If you don't know you can't tell them so that avenue was cut off for them to extort more money out of me. To this day, i still don't know what the, now wife earns although i have a ball park figure which i'm keeping to myself. :wink:
I hate the csa with a passion after the trouble/stress they gave me, but for some reason they have'nt been in touch with me for about 5 years. I'm not about to chase them up though and my ex hasn't come "cap in hand" so all status quo here at the moment.
That said, i'll bet i get a letter from them in the next week. :roll: