Ask a plain-English question and get an answer cited to the exact clause and page. Follow up in the same thread. Then switch gears — crunch the financial impact, or draft the correspondence and generate the file.
The original Contractor is responsible for the cost.
Under clause 10.5(d), if the Contractor fails to rectify part of the Work within a reasonable period, the Principal may have it carried out by others — at the Contractor's expense.
If they knew about it last month, it likely can't be treated as a variation.
Under clause 9.2(f)–(g), the Contractor must give a Variation notice within 10 Business Days — that window has already passed.
Found 3 material changes between v3 and v4:
Step 1. Ask a question the way you'd ask a colleague — Hevi reads across every contract, spec, manual and procedure in the project.