Roz, you edit the Graemlins, whether they are in the title or in the message, the same as you do any other editing. Push the edit button and make your changes. People also don't seem to realize you can edit the title of a new thread you've started the same way if you later discover a typo.
I'm a stickler about some kinds of typos - not because I'm such an ace typist but because it simplifies any search done for the thread later on. Imagine looking for references to "Cyro" and missing a key one because somebody (like Less) was calling them "Cryo" instead. For this reason, I will go in and correct certain kinds of typos, especially in the titles, of other people's posts. If anyone is bothered by that, let me know.
Regarding the pricing of PMA vs dry mounting: I don't use PMA, but I use Perfect Mount on Super Smooth, which is substantially more expense than fomecore and mounting tissue. So when I do my cost of materials analysis, I base all my prices for permanent mounting on the more expensive product. I suppose I'm over-charging for tissue mounting, but I don't want too many pricing levels and I don't want anyone requesting heat mounting on anything that should be pressure mounted just to save a buck or two. So I charge the same and use what is appropriate. Obviously any type of C/P mounting is a different deal altogether.