We had provided the first materials of this project on 9/13/2019 and were promptly paid 30 days after. I did not send a preliminary notice as an oversight since we were being paid. Then in November, on the 27th, we shipped the balance of the job. Now we are having a dispute over this payment. It isn't technically late, but they are claiming backcharges on us for things that we did not do. Point is, I didn't send a Preliminary Notice and now I would like to begin with the lien process. Is there anything we can do about this? I feel we could change the first delivered date for this portion to the 27th of November and just send a Prelim Notice based on that dollar amount and then immediately after send a Notice of Intent to Lien as is our intention at this point. Any help is appreciated. Thanks.