Inside IR35 and CMS payments confusion

Hi all,

This is a very emotive topic as lots of people see both sides, please bear in mind the following:

• i'm an active dad who had his kids min 3 nights p/week and has never missed payments
• i don't hide income
• i've supported and paid for everything like a parent should

• is there a process to follow aside asking for a recalc when salary drops over 70%.... i went from £130k to £40k and CMS are declining to change payments meaning my payment is £1300 on a net wage of £3400 ...that can't be right? (I have no arrears or backpayments).
• is there a particular arrangement with inside IR35 contracts and CMS as I was literally taxed 63% so my CMS payments work out to be closed 40% of my Net income..... that can't be right? (£20k CMS on £50k net salary gets me nowhere).
• is there a process for reconsideration above the online recalc portal as the line of 'maintenance should reflect earnings' and 'its all going to the kids upkeep' is not encouraging as it doesn't go to the kids... but I get the pleasure of seeing the mum enjoying it with clothes cars and nights out.... I have active 'none-molestation' orders and 'parental alienation' incidences recorded against their mum due to some nasty behaviour and I have kids every weekend... so its additionally insulting that the system allows for atrocious behaviour but still biases against the clearly active-paying parent, hense my stance on the financials.