Ken, this is complete TSC for KMTH-Marathon (has same problem) Hope this would help.
<[file][][]
<[tmsimulator_scenery_place][][]
<[string8][type][airport]>
<[string8][sname][Marathon Intl]>
<[string8][lname][Marathon Intl]>
<[string8][icao][KMTH]>
<[string8][country][]>
<[string8][coordinate_system][lonlat]>
<[vector2_float64][position][-81.05834389 24.72354691]>
<[float64][height][1.524]>
<[float64][size][5000]>
<[vector2_float64][tower_position][-81.0506173569646 24.7253256722816]>
<[float64][tower_height][13.29001058]>
<[bool][autoheight][true]>
<[string8][autoheight_method][]>
<[list_tmsimulator_scenery_object][objects][]
<[tmsimulator_scenery_object][element][0]
<[string8][type][ground]>
<[string8][geometry][kmth_marathon_rwy]>
<[vector3_float64][position][-81.051478 24.726272 0]>
<[float64][orientation][0]>
<[int32][autoheight_override][-1]>
>
<[tmsimulator_scenery_object][element][1]
<[string8][type][decal]>
<[string8][geometry][kmth_marathon_decal]>
<[vector3_float64][position][-81.051478 24.726272 0]>
<[float64][orientation][0]>
<[int32][autoheight_override][-1]>
>
<[tmsimulator_scenery_object][element][2]
<[string8][type][object]>
<[string8][geometry][kmth_marathon_obj]>
<[vector3_float64][position][-81.051478 24.726272 0]>
<[float64][orientation][0]>
<[int32][autoheight_override][-1]>
>
>
<[list_tmsimulator_scenery_object_animated][objects_animated][]
>
<[list_tmsimulator_runway][runways][]
<[tmsimulator_runway][element][0]
<[vector2_float64][endpoint1][-81.0594900282562 24.7231124238896]>
<[vector2_float64][endpoint2][-81.0433073377155 24.7292469883089]>
<[vector2_float64][threshold1][-81.058343894038 24.7235469125323]>
<[vector2_float64][threshold2][-81.0444498918375 24.7288138766919]>
<[float64][width][30]>
<[string8][name1][07]>
<[string8][name2][25]>
<[string8][appltsys1][std]>
<[string8][appltsys2][std]>
<[string8][papi1][left]>
<[string8][papi2][left]>
<[bool][papi1_has_custom_position][false]>
<[bool][papi2_has_custom_position][false]>
<[vector2_float64][papi1_custom_position][0 0]>
<[vector2_float64][papi2_custom_position][0 0]>
<[float64][papi1_glide_slope][3]>
<[float64][papi2_glide_slope][3]>
<[float64][papi1_spacing][6]>
<[float64][papi2_spacing][6]>
<[string8][reil1][none]>
<[string8][reil2][none]>
>>
<[list_tmsimulator_helipad][helipads][]
>
<[list_tmsimulator_startposition][start_positions][]
>
<[list_tmsimulator_parking_position][parking_positions][]
<[tmsimulator_parking_position][element][0]
<[vector2_float64][position][-81.0540029879656 24.7239713405019]>
<[float64][heading][67.2]>
<[float64][size][40]>
<[string8][name][Parking Position #1]>
>
<[tmsimulator_parking_position][element][1]
<[vector2_float64][position][-81.0435607357912 24.7280490788181]>
<[float64][heading][338.4]>
<[float64][size][40]>
<[string8][name][Parking Position #2]>
>
>
<[list_tmsimulator_view_position][view_positions][]
>
<[list_tmsimulator_scenery_cultivation][cultivation_files][]
<[tmsimulator_scenery_cultivation][element][0]
<[string8][filename][cultivation]>
<[string8][building_textures_folder][]>
<[bool][auto_height][true]>
<[bool][use_height_offset][false]>
>