[TowerTalk] Need OLD 18-AVQ dimensions

[K6TFZ@aol.com]

I am the original owner of a 30 year old 18AVQ but I can't find the manual.  
I have downloaded the instruction manual from MFJ/HyGain but several of the  
parts sizes for the longer tubes and the top section do not match what I have.  
Examples: My long tubes are 56" and 72" long and the manual shows 48" and  
52".
 
If you know, please direct me to a source for the older manual or give  me 
suggestions. Thank you.
 
Geoff, K6TFZ