No the Guard if mounted to the back flange of the table on the inside so the drainage and all T slots are clear along the back, this only works if you have the Boss Tables it has 3 1/4-20 SS screws that hold the back it in place and the corner posts have 2 10/12 tpi SS button head screws as well, it gives you the full table to use
Yes the oilers need to be replaced the one's I have used are not cheap but run at 170 PSI 150 PSI is ok like this pump here they are every where so you can some times find a good price
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