Looking for some suggestions/advice with a problem I have. with my 1983 1275 HLE Metro, 35,500 miles. I've replaced the points dizzy with a Minispares ADU3825MS electronic unit and replaced the ballasted coil with a non-ballasted one. Engine was starting and running fine before the change, timing has been set to factory spec. Now when I start the engine it will either spin at the proper speed and start instantly, or it will crank really slowly, e.g. flat battery slow, then speed up and start. There's no predicting what it will do. Battery is good, all battery cables are new, all terminals and connections are clean and tight, starter motor is new. With the HT or LT lead removed from the dizzy it will crank at proper speed. Even with second battery connected with jump leads it will still crank slowly.
General consensus is that the ignition is too far advanced, but theres only so far that it can be retarded before it won't fire. The 1275 A+ HLE engine has a 9.75:1 comp ratio and I'm using 99 octane Shell V Power fuel with a lead additive as the head has not been converted for unleaded fuel. Engine runs well no pinking.
I've spoken to Minispares and they say it should work with standard settings. I am aware of another Metro owner with the same problem and dizzy so was wondering if any Mini owners using the ADU3825MS dizzy had encountered the same problem and if so how did you fix it. Thanks.