Hi There
I've got the drawing if you want a copy. It'll have to be snail mail as I haven't got a scanner. The drawings have probabily been superceded by Panzer Tracts 4 which show 5 bump stops fitted. Dyer shows only the very first and last. Panzer Tracts specifically mentions all 5 being fitted. The following thread may also help
http://www.network54.com/Forum/433829/thread/1200080462/last-1200315397/Friulmodel+track+questions
send me a PM with your address and I'll send you what you want.