I will clearly be showing my ignorance of flying here, but I seem to having trouble understanding the use of the MCP on the J41. I d/l this A/C yesterday and love the flight characteristics, but am having a devil of a problem trying to get the MCP to work. As yet I haven't got to grips with the FMS and I wonder if that is where I am going wrong, but all I tried to do yesterday was fly and maintain a heading and altitude, I fail to see how the AP engages. I enjoy the workings of both the PMDG 737 and 747 and find very little trouble there, particularly regarding the MCP, so where am I going wrong here? Would appreciate any form of help, as yet I haven't found anything which directly points to my problem in the manual or tutorial.Ken Alderslade