I realize now that I have asked alot of questions recently that were covered in detail in the FAQ section, sorry for that.
I just spent alot of time reading through the FAQ's and was amazed at how much I learned. I found the motherlode of info on VE pumps too, really great stuff! Really pays to be patient and go through that stuff.
For those of us who are slow at work these days, read the FAQ' s again!