[Chrysler300] 300G pinging problem

[Brandt Jimerson <brandt300g@xxxxxxxxx>]

Hello everyone! First off, I want to convey that I understand about carbon build up (causing more pre-detonation). Secondly, I like to 'play around' with the timing at times and I guess I shouldn't mess with it especially after Jeff Carter adjusts it!!  However, I found the 'max power' point with what I ended up with adjustmentwise.  I basically have it back right where Jeff had it before.  Anyway, here's the story:  WITHOUT advancing the timing, I've been using tankfuls consisting of 1 part of leaded 111 octane racing fuel to 3 parts 91 unleaded fuel ( 91 highest in California except for a 'special' place that I go to).  Lately, when stepping on it, I've noticed very slight pinging so I got some techron by Chevron to clean out the combustion chambers. So far I have treated almost 2 (two) tankfuls and NOT ONLY did I do that, but I 'strenghened the concoction' to 1 part of 111 racing to not 3, but only 2 and 1/2 parts of reg. 91, and when stepping on it, the PINGING IS EVEN WORSE!!! 
 At first, 'hot rodding' it for the first 1/2 hour, no problem, no pinging.  From first 1/2 hour of driving to 1 hour driving (excuse me 'hot rodding), slight pinging, especially in the daytime on the freeways. Even though there's no signs of overheating, after driving it for an hour (when punching it),  FORGET IT!! It's about as bad as if I had NO 111 at all!  Are the combustion chambers hopefully just temporarily going through a condition caused by the techron!? Last night I went to buy some more for the 2nd tankful treatment but they were out of techron by Chevron so I tried Slick 50 fuel treatment. Can that brand be a problem? If none of the above is a factor, has engine damage occurred some how? Also, if (I hope), no damage has occured, will it just simply mean that I need more fuel treatments?  Finally, In a last case scenario, I can always retard the timing but it's SO powerful right now!  I guess I want to 'have my cake and eat it too!'  Please, any suggestions BEYOND
 appreciated and thank you VERY much in advance!!                                   Sincerely and 300ly, Brandt H. J. w/ a G. 

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