As mentioned by LightSpeed, the parts manual and the S&S engine manual are both freely available on the Morgan Three Wheeler Club website
https://www.mtwc.co.uk/news-post/ . There is a very informative Buyers Guide there as well that gives some information on what to check on your car and what you can do to improve it. As far as I know, Morgan do not produce a maintenance manual for the M3W and it probably doesn't exist even for the dealers to work to, as I am sure we would have got a sniff of it over the last 8 years if it did. I am really not sure what the dealers do jobs on the M3W in accordance with if there is no proper manual, I would have thought it was an essential requirement.
As for posting pictures, I use TM image Library and it seems to work OK. Instructions are in the Welcome section I think.
