Custom Map HELP PLEASE!

[kewiiNNN]

i tried to put a custom rally map inside server but it works and everything but when i place the parts of map i fall through except 1 part.i tried other maps because i wanted to know if its a bug but other maps also do this. this is the code

function map() 
    txd = engineLoadTXD ( "uk.txd" ) 
        engineImportTXD ( txd, 2134 ) 
        engineImportTXD ( txd, 2137 ) 
        engineImportTXD ( txd, 2133 ) 
        engineImportTXD ( txd, 2138 ) 
    col = engineLoadCOL ( "uk_rally.col" ) 
    col1 = engineLoadCOL ( "uk_rally.col" ) 
    dff = engineLoadDFF ( "uk1.dff", 0 ) 
    dff1 = engineLoadDFF ( "uk2.dff", 0 ) 
    dff2 = engineLoadDFF ( "uk3.dff", 0 ) 
    dff3 = engineLoadDFF ( "uk4.dff", 0 ) 
    engineReplaceCOL ( col, 2134 ) 
    engineReplaceCOL ( col1, 2137 ) 
    engineReplaceCOL ( col, 2133 ) 
    engineReplaceCOL ( col, 2138 ) 
    engineReplaceModel ( dff, 2134 ) 
    engineReplaceModel ( dff1, 2137 ) 
    engineReplaceModel ( dff2, 2133 ) 
    engineReplaceModel ( dff3, 2138 ) 
    engineSetModelLODDistance(2134, 2000) 
    engineSetModelLODDistance(2137, 2000) 
    engineSetModelLODDistance(2133, 2000) 
    engineSetModelLODDistance(2138, 2000) 
  
end 
  
function chat() 
        outputChatBox('Willos Rally', player, 0, 255, 0) 
end 
  
setTimer ( map, 1000, 1) 
addCommandHandler("reloadmap",map) 
  
addEventHandler("onClientResourceStop", getResourceRootElement(getThisResource()), 
    function() 
        engineRestoreCOL(2134) 
        engineRestoreCOL(2137) 
        engineRestoreCOL(2133) 
        engineRestoreCOL(2138) 
        engineRestoreModel(2134) 
        engineRestoreModel(2137) 
        engineRestoreModel(2133) 
        engineRestoreModel(2138) 
        destroyElement(dff) 
        destroyElement(dff1) 
        destroyElement(dff2) 
        destroyElement(dff3) 
        destroyElement(col) 
        destroyElement(txd) 
    end 
) 

[IIYAMA]

Probably 1 of your models contain collision of the other models. Which you can only use when you place the exact same objects on the exact same order next to each other.

[kewiiNNN]

well how to fix it*?

[IIYAMA]

by learning to edit col files. Can't help you with that.