my questions are in regards to 3-piece WELDED wheels that utilize silicone on the barrels (e.g. SSR). is silicone necessary for welded wheels? what i am assume is that not all welds are air tight which is why companies such as SSR use silicone to seal the seam between the lip and barrel. is this correct? the reason i am curious is due to fact that my silicone has seen better days and is compromised in some areas. of course it held air before, and a simple reapplication of silicone would solve this possibly minute issue. secondly, what is the best method to remove the silicone? wire wheel? chemical stripper? thanks in advance folks!