CROpportunityProducts: Custom field lengths changing between DAC & DAC Declaration

Hi Guys,

I have encountered an issue where in the customisation project editor, I am writing an extension for CROpportunityProducts and below is the declaration: 

#region UsrCloser
    [PXDBString(2)]
    [PXStringList(new string[] {"T4", "T2", "NA"}, new string[] {"TS4000", "TS2000", "N/A"})]
    [PXUIField(DisplayName="Closer")]
    public virtual string UsrCloser { get; set; }
    public abstract class usrCloser : PX.Data.BQL.BqlString.Field<usrCloser> { }
    #endregion

    #region UsrDoorHanding
    [PXDBString(3)]
    [PXStringList(new string[] {"LHH", "RHH", "LHA", "RHA", "BHA"}, new string[] {"Left Hand Hung", "Right Hand Hung", "Left Hand Active", " Right Hand Active", "Both Hands Active"})]
    [PXUIField(DisplayName="Door Handing")]
    public virtual string UsrDoorHanding { get; set; }
    public abstract class usrDoorHanding : PX.Data.BQL.BqlString.Field<usrDoorHanding> { }
    #endregion

    #region UsrVPSpec
    [PXDBString(512)]
    [PXUIField(DisplayName="VP Specification (Door & VP)")]

    public virtual string UsrVPSpec { get; set; }
    public abstract class usrVPSpec : PX.Data.BQL.BqlString.Field<usrVPSpec> { }
    #endregion

    #region UsrFrameSpec
    [PXDBString(512)]
    [PXUIField(DisplayName="Frame Specifications (Door & VP)")]

    public virtual string UsrFrameSpec { get; set; }
    public abstract class usrFrameSpec : PX.Data.BQL.BqlString.Field<usrFrameSpec> { }
    #endregion

    #region UsrDoorFinish
    [PXDBString(512)]
    [PXUIField(DisplayName="Door Finish")]

    public virtual string UsrDoorFinish { get; set; }
    public abstract class usrDoorFinish : PX.Data.BQL.BqlString.Field<usrDoorFinish> { }
    #endregion

    #region UsrExtDoorParts
    [PXDBString(512)]
    [PXUIField(DisplayName="Additional Door Parts")]

    public virtual string UsrExtDoorParts { get; set; }
    public abstract class usrExtDoorParts : PX.Data.BQL.BqlString.Field<usrExtDoorParts> { }
    #endregion

    #region UsrHandles
    [PXDBString(256)]
    [PXUIField(DisplayName="Handles")]

    public virtual string UsrHandles { get; set; }
    public abstract class usrHandles : PX.Data.BQL.BqlString.Field<usrHandles> { }
    #endregion

    #region UsrIsDoor
    [PXDBBool]
    [PXUIField(DisplayName="Is Door?")]

    public virtual bool? UsrIsDoor { get; set; }
    public abstract class usrIsDoor : PX.Data.BQL.BqlBool.Field<usrIsDoor> { }
    #endregion

    #region UsrDoorType
    [PXDBString(2)]
    [PXStringList(new string[] {"S", "D", "LH", "RR", "R", "SL"}, new string[] {"Single", "Double", "Leaf and a Half", "Rapid Rise", "Roller", "Sliding"})]
    [PXUIField(DisplayName="Door Type")]
    public virtual string UsrDoorType { get; set; }
    public abstract class usrDoorType : PX.Data.BQL.BqlString.Field<usrDoorType> { }
    #endregion

However, when i publish the customisation project, the lengths change for SOME fields to the below:

Does anyone know why/how this is happening?

I have also tried just adding them via the screen editor and data access but it still happens.

Thanks,

Aleks