RE: mvvs 58 limited edition
factory settings mean nothing. They are just a starting position for running in. During the running in process, many things change, and the needle settings sometimes have to change a lot.
Use standard needle setting systems.
First adjust idle to best rpm, and back off till rpm drop so you will have good transition. Then adjust H needle for best rpm and back off just slightly (no rpm drop). After that, fly and adjust as needed.
Uploading images is not difficult. You must have the images ready on your computer. It will not work on quick reply, but any of your own posts or quoted posts will work when edited. Then choose "upload more files"