Mark, I don't know if 'dubious' is the right word. I don't remember questioning any returns you may have posted. I could just be forgetful.
As far as a recent question to stagg, MRRL and REML are high yields and I am interested in high yields, partly because he raves about them. I thus wanted to take a look at them for my own account but tried to understand and check out the yields he claimed as part of my own DD. IU couldn't get his numbers but turns out he was using a long term number while I thought he was referring to a YTD return.