It might have been better not to go with the 'open end' tactic, instead, just go with 'direct'. Your post title implies you have a notion/information about the two, rather than 'has anyone got anything on the DIY?'. It seems more than half of the respondents feel the same. Just a suggestion..

As for the DIY, did you look at this? Eric, I fixed your MID from Peter. Writeup of E38 MID repair

I have a spare MID and was going to have a crack at it when I have time and (what is really needed) the inclination!