I am tweaking my hubs. Does it mess up the HubPages view count/earnings?

I don't know if it mess things up, but your views will be counted. Presumably, if the tweak improves the hub, includes better search terms or attracts more traffic, it will improve views and earnings. I have tuned my titles, done a new proofreading, made corrections, added or rearranged graphics, changed my keywords and done other little things-- mostly at the suggestion of other hubbers-- and usually I think it helps.

This is a difficult question to answer because many variables come into play when you tweaking your hubs. If you are updating your hubs or making them more understandable it may improve your view count or earnings but both of these are very unpredictable events. View Count and earnings are affected by what kind of readers your hubs are attracting, the hub's subject matter, the time of year the hub is being read, if its too long or too short, etc and many more factors I did not mentioned here.It really is very unpredictable.

My experience has been the same as Rochelle Frank.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.