help with NEQ6 pro altitude bolt sizes

[red dwalf]

hi all,

my altitude bolt on the mount as rubbed on the mount casing over time and is now a very sloppy fit in the up and down motion causing the bolt to ride under the cam and stop the mount from going any higher than 50 degrees, i`m hoping to use a helicoil to retap the thread and save the mount and the sleepless nights worrying about it.

so could someone please tell me what the size of the altitude bolts are, i`ve been told they are M10 1.25 pitch and someone else has said they are a a M10 1.5 pitch.

many thanks for the help