Howdy!
What product version number are you running? Are you modifying the TXDOT.ddb file and that item so that it will plot 100' increments for the Scale you choose. Can you verify that the DDB file is actually changes for the particular scale you desire?
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Thank You for helping out Mr. Ray!
I am running GEOPAK V8i (SELECT series 4) 08.11.09.878.
DDb file changes whenever I modify it; however it populates back its default definitions whenever I re-open it.
Please make sure you have read/write permissions to the folder where you keep the ddb file.
TxDOT's ddb file is probably password protected so you wouldn't be able to change it. You can change our default.ddb file we deliver and use that.