IMS Failure followup - how should I deal with insurance "weasels&#

[cafulford]

Hi, I want to thank everyone who responds in advance. I am really trying to figure out how to handle this. The story so far (condensed):

- purchased 04 boxster S in October 2010 from reputable dealer (Weissach Autohaus in CT). The car had about 20,300 miles on it.

- was VERY worried about ISM failure so I purchased 3 yr, 36 "power" warranty from Interstate (http://www.inds.com).

- had oil changed 1 year later before winter and had mentioned a few drops of oil I saw on my garage floor to another very reputable Porsche place nearby. At this point it had maybe 23 or 24k miles on it.

- they said there was a little seepage as there is on 90% of all Porsche's but no active leak. They mentioned it "could" be an IMS or rear main seal on the work order but with so little oil, they recommended not doing anything.

- complete IMS failure at ~27,400 miles a month ago (August 2012).

- INDC (insurance company) claim made. Of course, they are all weasels and they have delayed the process every step of the way. They first said it was the broken bolt on the "outside" of the IMS that caused the problem and because it was not an "internally lubricated part" that it was denied.

- my porsche mechanic of 40 years vehemently denied it and showed them proof by taking it apart and referencing all the info on the web on this issue and they agreed to send their inspector back for a 2nd time.

- this time they agreed and said they sent it to "upper" and they are "close" to approving the claim BUT they asked for maintenance records.

My question is: because I technically did not have to have an oil change per porsche's recommended oil change interval and there was only a little over 7k miles driven and that was after 20k, should I even tell them about the oil change where the slight oil leak was mentioned or should I just not send them the record of the oil change? I don't want to add fuel to the fire so to speak but I also do not want to be dishonest by with holding information.

Thanks!

Charlie