Read my S. Plug

All my plugs are running/firing fine. For some reason my #8 plug seems to be chipping the insulator off. I believe it called "Splashed deposits" here are some pics.
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The reason splash deposites happen is usually caused by dirty carburetor bores or air intake. But if this is true then why only #8 wouldn't more then just one do this. This is the second time this has happend to the same cylinder. I noticed a loss in higher end power and having a left bank o2 reading lean (maybe one triggering the other). I'm going to run some seafoam maybe tommorrow and swap to hotter plugs (autolite 26). I replaced it with a good used plug from my last plug swap and noticed the power back up to par. Here is the link that I found a pic some what similar to what mine look like http://www.theultralightplace.com/sparkplugs.htm any thoughts or comments on what is really going on (or thing is happening) are welcomed.

Second set of wires first being msd 8.5 currently taylor wires. Same cylinder two different plugs and wires same end result being the insolater being chipped. I starting to think maybe my injector is squirting fuel directly at the plug. I looked at my last plug and it's chipped exacly were this one is. I think I'm going to run a hotter plug in that cylinder and see what happens. Thanks for your input RIO any more thought/input please feel free to reply all others are welcomed as well.

Don't really wont too but I may just have to do that . I pulled the spare plug I put in there and it already has an area whiter then the rest. Its the same spot the other two are chipped at.

Anyone else????