I must be doing something wrong....a lot of times I try to search for a topic that I know has been discussed on the forum, and I try entering either the Dinky model number or the name, and I often get either nothing or very little. The latest example is the 690/161b Mobile Anti-Aircraft Gun. I clearly remember a discussion, with photos, etc. from many members, and now I cannot find it. Also, it appears that simply browsing through the forum is limited to just the past year.......anything prior to that must be searched? Please give me some instruction on how to properly search....thanks!