Seems like a lot that convert their own seem to have issues, not suggesting you and other aren't capable but their seems to be pattern with DIY'ers having issues. You ask all those that had their ECU sorted by MSD and see how many issues have arisen then compare to DIY'ers.

These ECU's are old now and really the best thing for them is to be left alone, i know after i had W/S fitted my baby board failed but that was basically the band failing, nobody to blame just a 20 year old part failing through wear and tear.

And i'm sure the leads are outsourced so when the kit was put together by MSD they wouldn't have know of the issue