We received a copy of your data and spec and know what is causing the number of blank lines when printing disbursements on bills. Essentially, these disbursements were retrieved from Payables and the description that went to WIP has 5 rows, and some of these blank. Your bill has the disb detail section, which will print one row for every description line, or in your case, 5 double-spaced lines. This wasn't visible because you chose not to use the K03 code to print the Disbursement WIP description.

There are 2 ways to address this.
1) Don't use the Disbursement Detail section on the spec. Instead, put all info you currently have into the Disbursement Footer section.

2) Change the way AP disbursement descriptions are retrieved into Time&Billing. Having only one line of text (instad of 5) will reduce significantly the white space on the bill. This can be modified on the same screen where you do the actual retrieval from A/P.