Help re info on ME 110

[letrbuck]

I'm a new subscriber to this wedsite and I hope you all can assist me. I have what I believe is a piece of a German WWII aircraft tail. It has the swastika and six bars on it (due to the position of the bars, I believe they are bombing mission marks vice "kills"). From my brief knowledge of the peice and what I can glean from the web so far, I believe it was a Battle of Britian era shoot down. The piece came from England and is a similiar color scheme from what the German's used for their aircraft of this era. From the size of the piece and the area of the swastika, I have ruled out the fighters. I believe I have a tail piece of the twin engine Bf 110. If I could find some blue prints of the rivet patterns of the 110, I beleive I could ultimately determine if this is a 110 or not. Does anyone out there know:

1) where I can find a blueprint of the rivet patterns of a 110,
2) a really good resource on German bomber paint schemes so I can possibly verify when this might have flown (I understand the Germans changed thier paint schemes frequently, and
3) any web sites or publications that may help me determine if German bomber crews placed mission markings on the fin of their aircraft similiar to kill markings on the fighters (I suspect so, but haven't been able to find any actual pictures of this on german bombers).

Thanks for the help!

LetRBuck