Ask when a fee is earned
Request the percentage or other calculation at settlement, filing, trial, appeal, and any event that changes the amount.
Separate fees from expenses
Ask which case costs may be advanced, who approves them, when they are repaid, and what the agreement says if there is no recovery.
Test the order of deductions
Use the same hypothetical recovery and expense figures with each firm so the calculation can be compared consistently.
Read scope and termination terms
Review which matters and stages are covered, how either side may end the relationship, and what obligations may continue.
Resolve differences in writing
If a consultation and agreement seem inconsistent, ask for clarification before signing and keep the complete executed copy.