Take on more work from a customer who paid late last time

Help me take on new work from a customer who paid late before.

The customer: [who]
What happened last time: [e.g. paid 10 weeks late after several chases]
The new job: [details and value]
Protection I'd like: [e.g. 50% deposit, stage payments, payment before handover]

If something essential is missing, ask me 1 or 2 short questions first. Wait for my answers.

Then:
1. Revised payment terms for this job.
2. A kind message explaining them, without dwelling on the past.
3. A calm reply if they object.

Fair and firm. Not legal advice. UK English.

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